Question

the ages of people in a library on a given day are 11, 13, 32, 44, 45, 45, 48, 48, 53, 53, 55, 69. put this data into the frequency table below. ages | frequency 11 - 20 | 2 21 - 30 |? 31 - 40 | 1 41 - 50 | 51 - 60 | 3 61 - 70 |

Explanation:

Step1: Count data in range

Count the number of data values in the age - range 21 - 30. The data set is 11, 13, 32, 44, 45, 45, 48, 48, 53, 53, 55, 69. There are 0 values in the range 21 - 30.

Step2: Count data in range 41 - 50

Count the number of data values in the age - range 41 - 50. The values 44, 45, 45, 48, 48 are in the range 41 - 50. So the frequency is 5.

Step3: Count data in range 61 - 70

Count the number of data values in the age - range 61 - 70. The value 69 is in the range 61 - 70. So the frequency is 1.

Answer:

Ages	Frequency
21 - 30	0
31 - 40	1
41 - 50	5
51 - 60	3
61 - 70	1