The number of hours a group of contestants spends preparing for a quiz show is listed below. What is the frequency table that represents that data?

8 12 25 32 45 50 62 73 80 99 4 18 9 39 36 67 33

I'll just show you how to make a frequency table using the above data.

We will group the data into class intervals and determine the frequency of the group.

8 12 25 32 45 50 62 73 80 99 4 18 9 39 36 67 33

smallest data value = 4

highest data value = 99

difference = 99 - 4 = 95

number of data = 17

Let us assign a class interval of 20.

Class Interval Tally Frequency

0-20 8, 12, 4, 18, 9, 5

21-40 25, 32, 39, 36, 33 5

41-60 45, 50, 67 3

61-80 62, 73, 80 3

81-100 99 1

That is how a frequency table look like. Usually, under the Tally column, tick marks are written instead of the numbers but for easier monitoring, I used the numbers in the data set.