Question

Here is a FDT for a small data set:

data freq
36 3
37 4
38 4
39 3
40 6
Find the following measures of central tendency.

mean =


median =


mode =

Answer 1

To find the mean, you sum up all the values in the data set and then divide by the number of values.

(36.3 + 37.4 + 38.4 + 39.3 + 40.6) / 5 = 38.4

mean = 38.4

To find the median, you need to put the values in order and find the middle value.

36.3, 37.4, 38.4, 39.3, 40.6

The middle value is 38.4, so the median is also 38.4.

To find the mode, you need to find the value that appears most frequently in the data set. In this case, none of the values are repeated, so there is no mode.