Consider the following sets of scores: (1) 8, 8, 8, 8, 8;(2)6, 6, 8, 10, 10; (3)4, 6, 8, 10, 12; (4)1004, 1006, 1008, 1010, 1012.
(a)Upon inspection, which show(s) the least variability? The most variability?
(b)For each set, compute the mean, and compute the variance and standard deviation directly from deviation scores.
(c)What do the results of (b) suggest about the relationship between central tendency and variability?

Question

Quizplus · Accepted Answer

The Answer is (a) (1) shows the least; (3) and (4) show the most

(b)for (1)

for (2)

for (3)

for (4)

(c)samples may have the same mean but show different degrees of variability or samples may have very different means but show the same degree of variability.

Consider the Following Sets of Scores: (1) 8, 8, 8