Standard Deviation & Degrees of Freedom Explained | Statistics Tutorial | MarinStatsLectures

Standard Deviation and Degrees of Freedom: What is Standard Deviation? What is Degrees of Freedom in Statistics with Examples! (Best Explanation!)
To Calculate Standard Deviation with R:(goo.gl/5P2LBY)
👍🏼 Best Statistics with R Programming Language:( goo.gl/4vDQzT )
▶︎ In this statistics video tutorial you will learn the underlying concept of the Sample Standard Deviation, and what it is actually measuring. We will also explain the concept of the Degrees of Freedom and why do you divide by (n-1)?
▶︎ Standard deviation gives us a measure of how far individual observations tend to move (or deviate) away from the mean, on average. In other words, on average how far does an observation tend to get from the mean? It is not quite the average deviation, but we can think of it that way conceptually.
▶︎ While we present the standard deviation formula, the focus is on the concept of what the standard deviation is attempting to summarize. We believe this to be one of the best explanations of standard deviation that you will see.
◼︎ Table of Content:
0:00:12 Introducing Standard Deviation with example
0:00:29 Standard Deviation Formula: Step by Step
0:01:37 the Average Absolute Deviation formula
0:03:06 Average Absolute Deviation formula vs Standard Deviation?
0:03:23 The Non-smooth functions of X versus the absolute value of X and how to fix it (squaring the deviations)
0:07:08 Degrees of Freedom explained: Why do we divide by (n-1) in the standard deviation formula
►► Watch More:
► Statistics for Data Science (Complete Series): bit.ly/2SQOxDH
►Data Science with R(Complete Series): bit.ly/1A1Pixc
►Getting Started with R (Series 1): bit.ly/2PkTneg
►Graphs and Descriptive Statistics in R (Series 2): bit.ly/2PkTneg
►Probability distributions in R (Series 3): bit.ly/2AT3wpI
►Bivariate analysis in R (Series 4): bit.ly/2SXvcRi
►Linear Regression in R (Series 5): bit.ly/1iytAtm
►ANOVA Concept and with R Videos: bit.ly/2zBwjgL
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►Linear Regression Concept and with R Videos: bit.ly/2z8fXg1
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Content Creator: Mike Marin (B.Sc., MSc.) Senior Instructor at UBC.
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These videos are created by #marinstatslectures to support some statistics and R programming language courses at The University of British Columbia (UBC) (#IntroductoryStatistics and #RVideoTutorials for Health Science Research), although we make all videos available to the everyone everywhere for free.
Thanks for watching! Have fun and remember that statistics is almost as beautiful as a unicorn!