Question

Find the mode of the following data: 

25, 21, 20, 24, 20, 20, 22, 24, 21, 22, 20, 20, 21

Answer 1

1. Count the frequencies

First, we list each unique number and count how often it appears in the set:

20: 5 times (20, 20, 20, 20, 20) 

21: 3 times (21, 21, 21)

22: 2 times (22, 22)

24: 2 times (24, 24)

25: 1 time (25)

2. Identify the highest frequency

Comparing the counts, the number 20 appears 5 times, which is more frequent than any other number in the set.

The mode of the data set {25, 21, 20, 24, 20, 20, 22, 24, 21, 22, 20, 20, 21} is 20.