Question

Given the list 10,7,5,3,-6
find by hand, mean,meadian, midrange, mode(s), range, popvar, and sample standard deviation.
(seven problems)

Answer 1

Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

There is no mode for these 5 scores (most frequently observed score).

Range = highest score - lowest.

Median: arrange scores in order of value, score that divides highest 50% from lowest 50% = median.

I'll let you do the calculations.

Answer 2

consider a football team whom the numbers on active players' jersey are 29,41, 50, 58, 79,..., 10 (listed in alphabetical order of the players' names) Does it make sense to calculate the mean of those numbers? why or why not?