Statistics Fundamentals: The Mean, Variance and Standard Deviation
May 22, 2020
StatQuest with Josh Starmer
One of the most basic things we do all the time in Data Analysis (i.e. Statistics, Machine Learning or any other sort of number crunching type thing) is calculate the mean, variance and standard deviation. This StatQuest walks you through these tasks and help you avoid a very common pitfall that is all too easy to fall into. NOTE: This StatQuest assumes are already familiar with... ...Histograms:
... ...the Normal Distribution:
...and Population Parameters:
NOTE: For more details on why dividing by 'n' underestimates the population variance and why we square each term, check out the follow up StatQuest:
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Category: Work Skills
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