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 value 53 is in 50 - 54, so frequency = 1

Step2: Count for 60 - 64

61 and 64 are in 60 - 64, so frequency = 2

Step3: Count for 65 - 69

66, 68, 68, 69, 69 are in 65 - 69, so frequency = 5

Answer:

50 - 54 frequency: 1
60 - 64 frequency: 2
65 - 69 frequency: 5