Observations not cited.
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 (s^2).
Standard deviation = square root of variance
If s^2 = 1, s ≠ 2.
A sample of n = 5 college students yielded the following observations on number of traffic citations for a moving violation during the previous year.
Calculate s2 and s. (Round all answers to four decimal places.)
s2 = 1
s = 2
1 answer