Question

the speed of cars on a highway at a given time are: 49, 53, 61, 64, 66, 68, 68, 69, 69, 70, 70, 73. put this data into the frequency table below.
speed | frequency
45 - 49 | 1
50 - 54 | ?
55 - 59 | 0
60 - 64 |
65 - 69 |
70 - 74 | 3

Explanation:

Step1: Count for 50 - 54

The number 53 is in the range 50 - 54, so the frequency is 1.

Step2: Count for 60 - 64

The numbers 61 and 64 are in the range 60 - 64, so the frequency is 2.

Step3: Count for 65 - 69

The numbers 66, 68, 68, 69, 69 are in the range 65 - 69, so the frequency is 5.

Answer:

Speed	Frequency
50 - 54	1
55 - 59	0
60 - 64	2
65 - 69	5
70 - 74	3