Question

For Introduction to Statistics and Probability, how do you a sample variance and sample population?

Answer 1

Sample variance is:

\[s^2 = \frac{1}{n - 1} \sum_{i=1}^n (x_i - m)^2\]

And there really isn't a "sample population". A sample is taken from a population, since you cannot test and entire population. You collect just a sample size in lieu of testing the whole population.

Answer 2

Thank you!