This statistics video tutorial explains how to calculate the coefficient of variation and the standard deviation of a sample.
Statistics - Free Formula Sheet: https://www.video-tutor.net/formula-sheets.html
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Introduction to Statistics:
https://www.youtube.com/watch?v=XZo4xyJXCak
Arithmetic, Geometric, & Harmonic Mean:
https://www.youtube.com/watch?v=6G6i8vSa8Zs
Cumulative Relative Frequency Table:
https://www.youtube.com/watch?v=6hJGa4Zp62M
Quartiles, Deciles, & Percentiles:
https://www.youtube.com/watch?v=40o82o3uNfk
Interquartile Range & Outliers:
https://www.youtube.com/watch?v=STSP8gTSdT8
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Skewness & Symmetric Distribution:
https://www.youtube.com/watch?v=U0NZu6f5TMI
Sample Mean and Population Mean:
https://www.youtube.com/watch?v=cmtBUWCC-6A
Mean, Median, & Mode - Grouped Data:
https://www.youtube.com/watch?v=zjHfAhcU6kE
Standard Deviation:
https://www.youtube.com/watch?v=IaTFpp-uzp0
Variance:
https://www.youtube.com/watch?v=deIQeQzPK08
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Mean Absolute Deviation:
https://www.youtube.com/watch?v=K4heM9mSrw0
Standard Deviation of Grouped Data:
https://www.youtube.com/watch?v=x6Pnf57wRAs
Introduction to Probability:
https://www.youtube.com/watch?v=SkidyDQuupA
Probability Formulas:
https://www.youtube.com/watch?v=bddckR734aM
Final Exams and Video Playlists:
https://www.video-tutor.net/