Question

as of 2011, the following are the ages at which a countrys presidents were inaugurated. 51, 61, 52, 53, 58, 68, 46, 57, 59, 57, 47, 57, 55, 65, 68, 47, 69, 66, 57, 62, 50, 64, 60, 45, 44, 44, 64, 68, 56, 45, 47, 45, 60, 44, 55, 60, 54, 57, 61, 58, 50, 57, 44, 42 construct a grouped frequency distribution for the data. use 41 - 45 for the first class and use the same width for each subsequent class. type the frequency value for each class. age frequency 41 - 45 46 - 50 51 - 55 56 - 60 61 - 65 66 - 70

Explanation:

Step1: Count the number of data points in the 41 - 45 class

The data points in the 41 - 45 class are 44, 44, 45, 44, 44, 45, 45, 44. So the frequency is 8.

Step2: Count the number of data points in the 46 - 50 class

The data points in the 46 - 50 class are 46, 47, 47, 50, 47, 50. So the frequency is 6.

Step3: Count the number of data points in the 51 - 55 class

The data points in the 51 - 55 class are 51, 52, 53, 55, 55, 54. So the frequency is 6.

Step4: Count the number of data points in the 56 - 60 class

The data points in the 56 - 60 class are 58, 57, 59, 57, 60, 57, 60, 58, 57, 60. So the frequency is 10.

Step5: Count the number of data points in the 61 - 65 class

The data points in the 61 - 65 class are 61, 62, 64, 64, 61. So the frequency is 5.

Step6: Count the number of data points in the 66 - 70 class

The data points in the 66 - 70 class are 68, 68, 69, 66, 68. So the frequency is 5.

Answer:

Age	Frequency
46 - 50	6
51 - 55	6
56 - 60	10
61 - 65	5
66 - 70	5