A total of 20 men and 20 women volunteer to participate in a statistics project. The height and weight of each subject are given in the table. Calculate the mean, variance, and standard deviation for height and weight in men and women.

Hi, everyone. Let's take a look at this practice problem together, a population has a mean trait value of a trait variances of 25. What is the standard deviation of the trait in this population? The answer options are a 2.5, B five C and D 50. Now recall that to calculate the standard deviation, it is expressed as the square root of the variants of the values. So for this problem, that means that the standard deviation is calculated by taking the square root of 25 and that equals five since 25 is the trait variance. It's what we take the square root of. So the correct answer is option B five. All right, everyone. I hope you found this helpful and I'll see you soon for the next practice problem.