What are the formulas for finding variance and standard deviation for a data set?
How do you calculate variance and standard deviation by hand?
0:00 START
0:14 formulas for sample variance and population variance
2:15 how to calculate the sample variance
3:31 calculating the deviations
4:08 calculating the deviations squared
4:50 calculating the sample variance
5:46 formulas for sample standard deviation and population standard deviation
6:15 calculating sample standard deviation
6:48 interpreting the sample standard deviation
Music
"Russian Dance" by Joey Pecoraro
