The number of big-screen televisions sold each month for 1 year was recorded by an electronics store. The results were 18 , 15 , 24 , 24 , 21 , 19 , 27 , 29 , 19 , 24 , 18 , and 38 . Calculate the mean, the median, and the mode of the number of televisions sold per month.
A) Mean: 22.5 TVs; median: 24 TVs; mode: 23 TVs
B) Mean: 22.5 TVs; median: 22.5 TVs; mode: 24 TVs
C) Mean: 23 TVs; median: 23 TVs; mode: 22.5 TVs
D) Mean: 23 TVs; median: 22.5 TVs; mode: 24 TVs
E) Mean: 23 TVs; median: 24 TVs; mode: 22.5 TVs

Question

Quizplus · Accepted Answer

To find the mean, we add up all the values and divide by the total number of values:
(18 + 15 + 24 + 24 + 21 + 19 + 27 + 29 + 19 + 24 + 18 + 38) / 12 = 276 / 12 = 23 TVs

To find the median, we arrange the values in order from least to greatest and find the middle value:
15, 18, 18, 19, 19, 21, 24, 24, 24, 27, 29, 38
The middle values are 24 and 24, so the median is the average of those two values:
(24 + 24) / 2 = 24 TVs

To find the mode, we look for the value(s) that occur most frequently. In this case, the value 24 occurs three times, which is more than any other value, so the mode is 24 TVs.

The Number of Big-Screen Televisions Sold Each Month for 1