For median (b), arrange scores in order of value. Median = 50th percentile = point where half the scores are valued above and half below.
(a) Mean = sum of scores/number of scores
Subtract each of the scores from the mean and square each difference. Find the sum of these squares (c). Divide that by the number of scores to get variance (d).
Standard deviation (e) = square root of variance
I'll let you do the calculations.
For the following scores, find the (a) mean, (b) median, (c) sum of squared
deviations, (d) variance, and (e) standard deviation:
2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0
1 answer
1 answer