A set of scores ranges from a high of x=24 to a low of x=12 and...
A set of scores ranges from a high of x=24 to a low of x=12 and has a mean of 18. Which of the following is the most likely value for the standard deviation for these scores? Please show work. (The answer is 3 points, but I don't understand why.)
a. 3 points
b. 6 points
c. 12 points
d. 24 points
Homework Answers
Using the thumb rule for calculating the standard deviation
std. dev. = (max - min)/4
std. dev. = (24 - 12)/4 = 3
Hence, answer is 3 points
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