Search results “Time series analysis methods and applications”
Applications of Time Series Analysis
Statistics and Data Series presentation by Dr. Ivan Medovikov, Economics, Brock University, Apr. 17, 2013 at The University of Western Ontario: "Applications of Time Series Analysis" This is a follow-up to "Introduction to Time Series Analysis" presented by Ivan Medovikov in the 2011-2012 Statistics and Data Series. The talk focussed on several applied problems which arise in time-series analysis, particularly, the problem of model-selection and testing for goodness of fit, the issues surrounding data with seasonal trends, and the problem of time-series forecasting. Slides for this presentation are on the RDC website. The Statistics and Data Series is a partnership between the Centre for Population, Aging and Health and the Research Data Centre. This interdisciplinary series promotes the enhancement of skills in statistical techniques and use of quantitative data for empirical and interdisciplinary research. More information at http://rdc.uwo.ca Look for more events like this on the Sociology Events Calendar. Uploaded by Communications and Public Affairs in 2014
Views: 37637 Western University
Views: 186627 Adhir Hurjunlal
Introduction to Time Series Analysis and its Importance
Subject:Environmental Sciences Paper: Statistical Applications in Environmental Sciences
Views: 882 Vidya-mitra
Time Series Analysis - An Introduction
Quantitative Techniques in Management: Time Series Analysis - An Introduction; Video by Edupedia World (www.edupediaworld.com). All Rights Reserved. Have a look at the other videos on this topic: https://www.youtube.com/playlist?list=PLJumA3phskPH2vSufmMsrBUHbuoQY3G4R Browse through other subjects in our playlist: https://www.youtube.com/channel/UC6E97LDJTFJgzWU7G3CHILw/playlists?sort=dd&view=1
Views: 10438 Edupedia World
CFA L- II: Quantitative Analysis: Time Series Analysis-Part 1 (of 4)
We offer the most comprehensive and easy to understand video lectures for CFA and FRM Programs. To know more about our video lecture series, visit us at www.fintreeindia.com This Video lecture was recorded by Mr. Utkarsh Jain, during his live CFA Level II Classes in Pune (India). This video lecture covers following key area's: 1. The predicted trend value for a time series, modeled as either a linear trend or a log-linear trend, given the estimated trend coefficients. 2. Factors that determine whether a linear or a log-linear trend should be used with a particular time series 3. Limitations of trend models 4. Requirement for a time series to be covariance stationary 5. Significance of a series that is not stationary. 6. Structure of an autoregressive (AR) model of order p 7. One- and two-period-ahead forecasts given the estimated coefficients. 8.How autocorrelations of the residuals can be used to test whether the autoregressive model fits the time series 9.Concept of mean reversion 10. Calculation of a mean-reverting level. 11. In-sample and out-of-sample forecasts 12. The forecasting accuracy of different time-series models based on the root mean squared error criterion 13. Instability of coefficients of time-series models. 14. Characteristics of random walk processes 15. implications of unit roots for time-series analysis 16. When unit roots are likely to occur and How to test for them 17. How a time series with a unit root can be transformed so it can be analyzed with an AR model. 18. Steps of the unit root test for nonstationarity 19. The relation of the test to autoregressive time-series models. 20. How to test and correct for seasonality in a time-series model 21. autoregressive conditional heteroskedasticity (ARCH) 22. how time-series variables should be analyzed for nonstationarity and/or cointegration before use in a linear regression. 23. an appropriate time-series model to analyze a given investment problem, and justify that choice. 24. Practice Questions with Solutions
Views: 14225 FinTree
An Introduction to Time Series Analysis
Paper: Stochastic Processes and Time Series Analysis Module :An Introduction to Time Series Analysis Content Writer: Samopriya Basu/ Sugata Sen Roy
Views: 8788 Vidya-mitra
Introduction to Time Series Analysis
Training on Introduction to Time Series Analysis for CT 6 by Vamsidhar Ambatipudi
Time Series Analysis in Python | Time Series Forecasting | Data Science with Python | Edureka
** Python Data Science Training : https://www.edureka.co/python ** This Edureka Video on Time Series Analysis n Python will give you all the information you need to do Time Series Analysis and Forecasting in Python. Below are the topics covered in this tutorial: 1. Why Time Series? 2. What is Time Series? 3. Components of Time Series 4. When not to use Time Series 5. What is Stationarity? 6. ARIMA Model 7. Demo: Forecast Future Subscribe to our channel to get video updates. Hit the subscribe button above. Machine Learning Tutorial Playlist: https://goo.gl/UxjTxm #timeseries #timeseriespython #machinelearningalgorithms - - - - - - - - - - - - - - - - - About the Course Edureka’s Course on Python helps you gain expertise in various machine learning algorithms such as regression, clustering, decision trees, random forest, Naïve Bayes and Q-Learning. Throughout the Python Certification Course, you’ll be solving real life case studies on Media, Healthcare, Social Media, Aviation, HR. During our Python Certification Training, our instructors will help you to: 1. Master the basic and advanced concepts of Python 2. Gain insight into the 'Roles' played by a Machine Learning Engineer 3. Automate data analysis using python 4. Gain expertise in machine learning using Python and build a Real Life Machine Learning application 5. Understand the supervised and unsupervised learning and concepts of Scikit-Learn 6. Explain Time Series and it’s related concepts 7. Perform Text Mining and Sentimental analysis 8. Gain expertise to handle business in future, living the present 9. Work on a Real Life Project on Big Data Analytics using Python and gain Hands on Project Experience - - - - - - - - - - - - - - - - - - - Why learn Python? Programmers love Python because of how fast and easy it is to use. Python cuts development time in half with its simple to read syntax and easy compilation feature. Debugging your programs is a breeze in Python with its built in debugger. Using Python makes Programmers more productive and their programs ultimately better. Python continues to be a favorite option for data scientists who use it for building and using Machine learning applications and other scientific computations. Python runs on Windows, Linux/Unix, Mac OS and has been ported to Java and .NET virtual machines. Python is free to use, even for the commercial products, because of its OSI-approved open source license. Python has evolved as the most preferred Language for Data Analytics and the increasing search trends on python also indicates that Python is the next "Big Thing" and a must for Professionals in the Data Analytics domain. For more information, please write back to us at [email protected] Call us at US: +18336900808 (Toll Free) or India: +918861301699 Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka
Views: 25693 edureka!
Forecasting Methods Overview
This is an overview of some basic forecasting methods. These basic forecasting methods are broken into two categories of approaches: quantitative and Qualitative. Quantitative forecasting approaches use historical data and correlative association to make forecasts. Qualitative forecasting approaches look at the opinions of experts, consumers, decision makers and other stakeholders. This video is about basic forecasting methods and covers 9 of the most common approaches. Avercast forecasting software makes good use of these approaches, and is powered by over 200 algorithms. Visit http://www.avercast.com/ for more information on our leading forecasting software.
Views: 89427 Avercast, LLC
Time Series In R | Time Series Forecasting | Time Series Analysis | Data Science Training | Edureka
( Data Science Training - https://www.edureka.co/data-science ) In this Edureka YouTube live session, we will show you how to use the Time Series Analysis in R to predict the future! Below are the topics we will cover in this live session: 1. Why Time Series Analysis? 2. What is Time Series Analysis? 3. When Not to use Time Series Analysis? 4. Components of Time Series Algorithm 5. Demo on Time Series
Views: 65958 edureka!
Introducing Time Series Analysis and forecasting
This is the first video about time series analysis. It explains what a time series is, with examples, and introduces the concepts of trend, seasonality and cycles.
time series analysis
TIME SERIES ANALYSIS for A level Business Studies by R Mudalli
Maths Tutorial: Smoothing Time Series Data (statistics)
VCE Further Maths Tutorials. Core (Data Analysis) Tutorial: Smoothing Time Series Data. This tute runs through mean and median smoothing, from a table and straight onto a graph, using 3 and 5 mean & median smoothing and 4 point smoothing with centring. For more tutorials, visit www.vcefurthermaths.com
Views: 53309 vcefurthermaths
Time Series Analysis | Trend Measurement | Method of Least Square | Measurement of Secular Trend
Management Studies; Quantitative Techniques: Time Series Analysis | Trend Measurement | Method of Least Square; Video by Edupedia World (www.edupediaworld.com). All Rights Reserved. Have a look at the other videos on this topic: https://www.youtube.com/playlist?list=PLJumA3phskPH2vSufmMsrBUHbuoQY3G4R Browse through other subjects in our playlist: https://www.youtube.com/channel/UC6E97LDJTFJgzWU7G3CHILw/playlists?sort=dd&view=1
Views: 24274 Edupedia World
Time Series Analysis of 30-Day Readmission Rates: Health Care Innovation - Bridging the Divide
Application of times series methods to 30-day readmission rates of PCI patients in the BRIDGES database. Methods include interrupted time series, cross-correlation and Granger causality. Dr. Paul Kolm, DAC-CTR Associate Director, is Director of Biostatistics at Christiana Care Health System, and Research Professor of Medicine at Thomas Jefferson Medical College.  He has been and is a co-investigator and lead biostatistician on several NIH- and industry-funded research projects. Dr. Kolm is a statistical editor for the Journal of the American College of Cardiology and a member of the American Heart Association Epidemiology, Prevention, Outcomes and Behavioral study section. He has considerable experience in the application of general and generalized linear and hierarchical models, classification and tree regression, time-to-event analysis, multivariate analysis, cost-effectiveness analyses, and multiple imputation methods for missing data.
Views: 621 DE-CTR ACCEL
QUANTITATIVE METHODS TIME SERIES ANALYSIS. In this video I show you how to forecast using Time Series Analysis. I use the Additive Method where y = t + s. The example I use is a Google keyword search on . Time Series ARIMA Models Example Watch this brief (10 minutes or so!!) video tutorial on how to do all the calculations required for a Time Series analysis of data on Microsoft Excel. Try and do your .
Views: 416 Keyon Parker
Mod-04 Lec-10 Time Series Analysis - I
Stochastic Hydrology by Prof. P. P. Mujumdar, Department of Civil Engineering, IISc Bangalore For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 18568 nptelhrd
Time Series Foundation: Time Series Analysis and Forecasting
Michael Tejedor interviews Alex Bocharov regarding his Time Series Foundation project. Time Series Foundation (TSF) is a .NET toolset for exploring new algorithms in time series analysis and forecasting. The TSF was created to further developments in Time Series Analysis, the idea of data evolving in time. By studying Time Series Analysis, you can analyze past data to help predict future outcomes. Watch the video and see how the TSF is being used in a real-world application; making sense and forecasting of web traffic. If you are interested in learning more about the TSF, be sure to visit the BI Labs section in the Microsoft BI Website at www.Microsoft.com/BI.
Views: 1182 MicrosoftBI
Chapter 16: Time Series Analysis (1/4)
Time Series Analysis: Introduction to the model; Seasonal Adjustment Method Part 1 of 4
Views: 182133 Simcha Pollack
Excel - Time Series Forecasting - Part 1 of 3
Part 2: http://www.youtube.com/watch?v=5C012eMSeIU&feature=youtu.be Part 3: http://www.youtube.com/watch?v=kcfiu-f88JQ&feature=youtu.be This is Part 1 of a 3 part "Time Series Forecasting in Excel" video lecture. Be sure to watch Parts 2 and 3 upon completing Part 1. The links for 2 and 3 are in the video as well as above.
Views: 758976 Jalayer Academy
8. Time Series Analysis I
MIT 18.S096 Topics in Mathematics with Applications in Finance, Fall 2013 View the complete course: http://ocw.mit.edu/18-S096F13 Instructor: Peter Kempthorne This is the first of three lectures introducing the topic of time series analysis, describing stochastic processes by applying regression and stationarity models. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 161605 MIT OpenCourseWare
Time Series Analysis I: Introduction
Clayton Webb, an Assistant Professor of Political Science at the University of Kansas, and Sara Mitchell, a Professor of Political Science at the University of Iowa, describe their ICPSR Summer Program workshop "Time Series Analysis I: Introduction." For more information about the ICPSR Summer Program, visit www.icpsr.umich.edu/sumprog
Time Series Analysis with forecast Package in R Example Tutorial
What is the difference between Autoregressive (AR) and Moving Average (MA) models? Explanation Video: https://www.youtube.com/watch?v=2kmBRH0caBA
Views: 14785 The Data Science Show
Lecture - 35 The Analysis of Time Series
Lecture series on Project and Production Management by Prof. Arun kanda, Department of Mechanical Engineering, IIT Delhi. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 139746 nptelhrd
Time Series Analysis with Python Intermediate | SciPy 2016 Tutorial | Aileen Nielsen
Tutorial materials for the Time Series Analysis tutorial including notebooks may be found here: https://github.com/AileenNielsen/TimeSeriesAnalysisWithPython See the complete SciPy 2016 Conference talk & tutorial playlist here: https://www.youtube.com/playlist?list=PLYx7XA2nY5Gf37zYZMw6OqGFRPjB1jCy6.
Views: 56487 Enthought
Time Series Analysis Using Neural Network || Free Statistical Package
In this video you will learn how to use a statistical software Zaitun to perform time series analysis using neural network. This is a very useful software for students and faculty members to do their projects and research articles.
Views: 797 MAP Digital Academy
Time Series Analysis (Georgia Tech) - 1.1.1 - Time Series Decomposition - Basic Statistical Concepts
Time Series Analysis PLAYLIST: https://tinyurl.com/TimeSeriesAnalysis-GeorgiaTech Unit 1: Basic Time Series Analysis Part 1: Basic Time Series Decomposition Lesson: 1 - Time Series Decomposition - Basic Statistical Concepts
Views: 839 Bob Trenwith
11. Time Series Analysis II
MIT 18.S096 Topics in Mathematics with Applications in Finance, Fall 2013 View the complete course: http://ocw.mit.edu/18-S096F13 Instructor: Peter Kempthorne This is the second of three lectures introducing the topic of time series analysis, describing multivariate time series, representation theorems, and least-squares estimation. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 16555 MIT OpenCourseWare
Excel - Time Series Forecasting - Part 3 of 3
Part 1: http://www.youtube.com/watch?v=gHdYEZA50KE&feature=youtu.be Part 2: http://www.youtube.com/watch?v=5C012eMSeIU&feature=youtu.be This is Part 3 of a 3 part "Time Series Forecasting in Excel" video lecture. Be sure to watch Part 1 and 2 before watching this part. The links for Parts 1 and 2 are in the video as well as above.
Views: 268297 Jalayer Academy
Time series Analysis (Trend Seasonality (TCSI) Modelling) and forecasting  using Excel
1. Basic Multiplicative Model (TCSI) 2. What are different components like Trend component, cyclic component, seasonal component etc? 3. How to calculate different component in a given series using excel 4. How to forecast using TCSI model (step by step in excel) VSP Group, my partner program. Get connected! https://youpartnerwsp.com/en/join?62916
Views: 10918 Gopal Malakar
R tutorial: xts & zoo for time series analysis
Learn more about time series analysis with xts & zoo: https://www.datacamp.com/courses/manipulating-time-series-data-in-r-with-xts-zoo So, what is xts? xts stands for "eXtensible time series"; Objects that are designed to be flexible and powerful - designed to make using time series easy. At the heart of xts is a zoo object, a matrix object plus a vector of times corresponding to each row, which in turn represents an observation in time. Visually, you can think of this as data plus an array of times. To illustrate, we'll create a simple matrix called "x". Each row of our data is an observation in time. To track these observations we have dates in an object called "idx". Note that this index must be a true time object, not a string or number that looks like time. Now, xts lets you use nearly any time class - be it of class Date, POSIX times, timeDate, chron and more - but they need to be time based. Here we are using R's Date objects. At this point though we don't have a time series. We'll need to join these to create our xts object. To do this, we call the xts constructor with our data "x" and pass our dates "idx' to order.by. The constructor has a few optional arguments, the most useful being "tzone" - to set time zones and "unique", which will force all times be unique. Note that xts doesn't enforce uniqueness for your index, but you may require this in your own applications. One thing to note is that your index should be in increasing order of time. Earlier observations at the top of your object, and later more recent observations toward the bottom. If you pass in a non-sorted vector, xts will reorder your index and the corresponding rows of your data to ensure you have a properly ordered time series. Looking back to the example, you can see that we now have a matrix of values with dates on the left. They may look like rownames, but remember its really our index. So what makes xts special? As I mentioned before - xts is a matrix that has associated times for each observation. Basic operations work just like they would on a matrix, almost. One difference you'll note is that subsets will always preserve the object's 'matrix' form - choose one or more than one column will always results in another matrix object. Another difference is that attributes are generally preserved as you work with your data - so if you store something like a timestamp of when you acquired the data in an 'xts attribute' subsetting won't cause that information to be lost. Finally since xts is a subclass of zoo, you get all the power of zoo methods for free. We'll see how important this is throughout the course. One final point before we break out the exercises. Sometimes it will be necessary to reverse the steps we took to create the time series, and instead extract our raw data or raw times for use in other contexts. xts provides two functions that we'll cover here. coredata() is how you get the raw matrix back, and index() is how you extract the dates or times. Simple and effective. Now, let's get to work!
Views: 9625 DataCamp
Introduction to Multivariate Analysis
Paper: Multivariate Analysis Module name: Introduction toMultivariate Analysis Content Writer: Souvik Bandyopadhyay
Views: 49051 Vidya-mitra
Data Science - Part XVI - Fourier Analysis
For downloadable versions of these lectures, please go to the following link: http://www.slideshare.net/DerekKane/presentations https://github.com/DerekKane/YouTube-Tutorials This lecture provides an overview of the Fourier Analysis and the Fourier Transform as applied in Machine Learning. We will go through some methods of calibration and diagnostics and then apply the technique on a time series prediction of Manufacturing Order Volumes utilizing Fourier Analysis and Neural Networks.
Views: 10148 Derek Kane
Local Similarity Analysis (LSA) of Time Series Data and Applications to Metagenomics
Fengzhu Sun, University of Southern California Network Biology https://simons.berkeley.edu/talks/sun-04-15-16
Views: 455 Simons Institute
Chapter 16: Time Series Analysis  (2/4)
Time Series Analysis: Worked example using the Seasonal Adjustment Method Part 2 of 4
Views: 65238 Simcha Pollack
Time Series Analysis
This is Lecture series on Time Series Analysis Chapter of Statistics. In this part, you will learn the meaning of time series and its analysis. Watch all statistics videos at http://svtuition.com/watch/#ST
Views: 28341 Svtuition
Case Study in Travel Business - Time Series Analysis with Seasonal Data - Cheuk Ting Ho
PyData Amsterdam 2018 For time series analysis, everyone's talking about ARIMA or Holt-Winters. But there's other models which could also break down a seasonal series into trend, seasonality and noise. We will use an open source Python library called Seasonal to analyse B2B worldwide travel data. Slides: https://www.slideshare.net/CheukTingHo/pydata-amsterdam-2018-time-series-analysis-with-seasonal-data-99093353 -- www.pydata.org PyData is an educational program of NumFOCUS, a 501(c)3 non-profit organization in the United States. PyData provides a forum for the international community of users and developers of data analysis tools to share ideas and learn from each other. The global PyData network promotes discussion of best practices, new approaches, and emerging technologies for data management, processing, analytics, and visualization. PyData communities approach data science using many languages, including (but not limited to) Python, Julia, and R. PyData conferences aim to be accessible and community-driven, with novice to advanced level presentations. PyData tutorials and talks bring attendees the latest project features along with cutting-edge use cases.
Views: 393 PyData
How to Predict Stock Prices Easily - Intro to Deep Learning #7
We're going to predict the closing price of the S&P 500 using a special type of recurrent neural network called an LSTM network. I'll explain why we use recurrent nets for time series data, and why LSTMs boost our network's memory power. Coding challenge for this video: https://github.com/llSourcell/How-to-Predict-Stock-Prices-Easily-Demo Vishal's winning code: https://github.com/erilyth/DeepLearning-SirajologyChallenges/tree/master/Image_Classifier Jie's runner up code: https://github.com/jiexunsee/Simple-Inception-Transfer-Learning More Learning Resources: http://colah.github.io/posts/2015-08-Understanding-LSTMs/ http://deeplearning.net/tutorial/lstm.html https://deeplearning4j.org/lstm.html https://www.tensorflow.org/tutorials/recurrent http://machinelearningmastery.com/time-series-prediction-lstm-recurrent-neural-networks-python-keras/ https://blog.terminal.com/demistifying-long-short-term-memory-lstm-recurrent-neural-networks/ Please subscribe! And like. And comment. That's what keeps me going. Join other Wizards in our Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 music in the intro is chambermaid swing by parov stelar Follow me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w
Views: 435673 Siraj Raval
Chapter 16: Time Series Analysis (4/4)
Time Series Analysis: Worked example using the Seasonal Adjustment Method Part 4 of 4
Views: 32165 Simcha Pollack
Forecasting Time Series | Time Series Analysis | Data Science Training | ExcelR
Forecasting Certification Training - Agenda of this Forecasting Time Series video is to explain why forecasting, Forecasting strategy, EDA & Graphical Representation, Forecasting Components, Forecasting Models & Errors For more visit : https://www.excelr.com/forecasting/ ExcelR Forecasting Certification Training Introduction video : https://youtu.be/X1cc2jgAbTw About Forecasting Certification Training Early knowledge is the wealth, even if that knowledge is bit imperfect!!! Wouldn’t you want to unlock the mystery of predicting the stock market? And many of us want to understand how companies are managing their inventory and other resources by forecasting their sales. Here is the solution in the form forecasting technique also called as time series analysis. Forecasting techniques will be applied for time series data. Forecasting Analytics is considered as one of the major branches in big data analytics. Managers often have to take decisions in uncertain environment and often find themselves in a bad situation due to lack of skills on applying the right analytical techniques on the data. Forecasting techniques helps companies save millions of dollars by adjusting their production schedules and other plans. Forecasting techniques on univariate and multivariate time series analysis have huge applications across the industries and areas such as Operations management, Finance & Risk management, Retails, Telecom and manufacturing. Moving Averages and smoothing methods, Box- Jenkins (ARIMA) methodology, Regression with time series data, Holts-Winter, Arch-Garch and Neural Network are the methods widely used for forecasting. Arch-Garch and Neural Networks are the advanced techniques in the forecasting analytics which will be used to model the high frequency data such as stock market and big data. Electricity usage pattern over a period of years in a region Sales of a product over several years Stock market data Things You Will Learn… Introduction to Forecasting Forecasting Errors Forecasting Methods Smoothing Methods Modeling different components Detecting Anomalies For Full Course Content Visit : https://www.excelr.com/forecasting/ Forecasting steps involves: Data manipulation and cleaning • Problem formulation and data collection • Model building and evaluation • Model implementation to generate forecast • Forecast evaluation Tools You Will Learn… MS-Excel R – Revolution Analytics is recently acquired by Microsoft but still remains to be an open source software ---------------------------------------------------------------------------------- Mode of Trainings : E-Learning Online Training Class Room Training --------------------------------------------------------------------------- For More Info Contact :: Toll Free (IND) : 1800 212 2120 | +91 80080 09704 Malaysia: 60 11 3799 1378 USA: 001-608-218-3798 UK: 0044 203 514 6638 AUS: 006 128 520-3240 Email: [email protected] Web: www.excelr.com
Panel Data Analysis | Econometrics | Fixed effect|Random effect | Time Series | Data Science
This video is on Panel Data Analysis. Panel data has features of both Time series data and Cross section data. You can use panel data regression to analyse such data, We will use Fixed Effect Panel data regression and Random Effect panel data regression to analyse panel data. We will also compare with Pooled OLS , Between effect & first difference estimation For Analytics study packs visit : https://analyticuniversity.com Time Series Video : https://www.youtube.com/watch?v=Aw77aMLj9uM&t=2386s Logistic Regression using SAS: https://www.youtube.com/watch?v=vkzXa0betZg&t=7s Logistic Regression using R : https://www.youtube.com/watch?v=nubin7hq4-s&t=36s Support us on Patreon : https://www.patreon.com/user?u=2969403
Views: 59281 Analytics University

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