Khan Academy Static

Standard deviation tells us how far away from the mean each data point typically is in a set of numbers. How we calculate standard deviation depends on whether the data represents an entire population or came from a sample. This tutorial focuses on the data that represents an entire population.

4498_Statistics_Variance_of_a_population.html

4499_Statistics_Alternate_variance_formulas.html

4496_Variance_of_a_population.html

4497_Population_standard_deviation.html

4495_Measures_of_spread_range_variance_standard_deviation.html