Find the approximate standard deviation of the following set of scores: 3,6,2,7,8 .
A)2.24
B)2.59
C)3.32
D)6.70

Question

Quizplus · Accepted Answer

To find the standard deviation, we first need to find the mean of the data:

mean = (3+6+2+7+8)/5 = 5.2

Then, we can calculate the variance:

variance = [(3-5.2)^2 + (6-5.2)^2 + (2-5.2)^2 + (7-5.2)^2 + (8-5.2)^2]/5

= 6.16

Finally, we take the square root of the variance to get the standard deviation:

standard deviation = √6.16 ≈ 2.59

Therefore, the best choice is B.

Find the Approximate Standard Deviation of the Following Set of Scores