Standard Deviation Examples With Answers. 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. 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. S 31 6 9 6 2 2. Somebody who is 3 standard deviations from the mean could either have a score of 90 or 160.
2 8 standard deviation the standard deviation is 2 8 which is somewhat low.
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. Find the sample variance and standard deviation. 2 8 standard deviation the standard deviation is 2 8 which is somewhat low.
