Find the mean of the scores in the following frequency distribution.Remember the f column indicates the number of times each score occurred in the original data set.
A)8
B)7
C)6.21

Question

Find the mean of the scores in the following frequency distribution.Remember the f column indicates the number of times each score occurred in the original data set. 
A)8 
B)7 
C)6.21

Quizplus · Accepted Answer

To find the mean of a frequency distribution, we need to multiply each score by its frequency, sum up the products, and divide by the total number of scores. In this case, we have:

(3 x 2) + (4 x 3) + (5 x 2) + (6 x 1) + (7 x 2) + (9 x 1) = 6 + 12 + 10 + 6 + 14 + 9 = 57

Total number of scores = 2 + 3 + 2 + 1 + 2 + 1 = 11

Mean = sum of products / total number of scores = 57 / 11 = 5.18 (rounded to two decimal places)

Therefore, the closest answer choice is C, 6.21.

Find the Mean of the Scores in the Following Frequency