Standard Deviation Examples With Answers. Somebody who is 3 standard deviations from the mean could either have a score of 90 or 160. S u 2 n u n 2 c.
S 31 6 9 6 2 2. 7 88 variance last the researcher finds the square root of the variance. 100 is 2 standard deviations below the mean 100 120 2 10 140 is 2 standard deviations above the mean 140 120 2 10 95 of people have a score between 100 and 140.
100 is 2 standard deviations below the mean 100 120 2 10 140 is 2 standard deviations above the mean 140 120 2 10 95 of people have a score between 100 and 140.
Because this is a sample of responses the researcher subtracts one from the number of values 8 values 1 7 to average squares and find the variance. Round to two decimal places. 100 is 2 standard deviations below the mean 100 120 2 10 140 is 2 standard deviations above the mean 140 120 2 10 95 of people have a score between 100 and 140. 7 88 variance last the researcher finds the square root of the variance.
