Standard Deviation and Coefficient of Variation

This statistics video tutorial explains how to calculate the coefficient of variation and the standard deviation of a sample.

Introduction to Statistics:

Arithmetic, Geometric, & Harmonic Mean:

Cumulative Relative Frequency Table:

Quartiles, Deciles, & Percentiles:

Interquartile Range & Outliers:

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Skewness & Symmetric Distribution:

Sample Mean and Population Mean:

Mean, Median, & Mode - Grouped Data:

Standard Deviation:

Variance:

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Mean Absolute Deviation:

Standard Deviation of Grouped Data:

Introduction to Probability:

Probability Formulas:

Final Exams and Video Playlists:

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[komolafedeborah]

If the data for Hb % levels of blood samples collected from individuals were subjected to analysis and Sum of fx= 8970, Sum of f = 110, Sum of f(x-xbar)square = 550.
Calculate mean, mean deviation and standard deviation and coefficient of Variation.


I have this question from my lecturer. Problem is, how can I calculate the mean deviation without the individual variables ? Being trying this but I've not been able to. Thank you.

[feivelwilliamaudiestevianto]

Excuse me Organic chemistry tutor, i have a question, how do you calculate the Standard Deviation of a Population using the Standard Deviations of samples? because i am currently unable to understand it

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