Saturday May 27th 2017

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Understanding Covariance

Understanding Covariance

Great video explaining Covariance it discusses the very basics of what covariance is (and isn't) using two real-world examples; stock market index covariance and worker productivity covariance.

Forecasting Methods made simple – Exponential Smoothing

Forecasting Methods made simple – Exponential Smoothing

A Great video on understanding Alpha There Series of videos by Piyush Shah, under the Name Forecasting Methods made simple

Statistics 101: Simple Linear Regression (Part 4), Fit and the Coefficient of Determination

Statistics 101: Simple Linear Regression (Part 4), Fit and the Coefficient of Determination

In video Brandon explained - how well a regression line fits the data it models. It is important to note that a regression model is unique to the data it represents. Adding or changing data points will most certainly change the regression model. The model is also only valid for the range of data points under analysis. It is not proper to [...]

Statistics 101: Simple Linear Regression (Part 3), The Least Squares Method

Statistics 101: Simple Linear Regression (Part 3), The Least Squares Method

I reviewed number of videos on this topic and found this to most comprehensible. An excellent video by Brandon Foltz. In this video, he very simply explained the fundamental concept in linear regression; the Least Squares Method. This video will involve formulas and simple calculations. While you may not have to find a simple regression line by [...]

How to Use the Z Table

How to Use the Z Table

An excellent explaination on Z, P valyes and what they really mean by Kari Alexander

Linear Regression Analysis

Linear Regression Analysis

Tutorial introducing the idea of linear regression analysis and the least square method. Typically used in a statistics class.

How to calculate Standard Deviation and Variance

How to calculate Standard Deviation and Variance

Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide.

Statistics 101: To z or to t, That is the Question

Statistics 101: To z or to t, That is the Question

In this video the difference between the z- and t-distributions is explored. Many formulas in stats look exactly the same, except one has a z-term and the other has a t-term. Why? Watch this video and enjoy!

Confidence Intervals – using T distribution

Confidence Intervals – using T distribution

Simple and plain elaboration of Whent to use T distribution for Confidence Interval. 

Confidence Intervals – Using Z

Confidence Intervals – Using Z

Learn how to compute confidence intervals in this easy to follow statistics video.

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