Question

The coach recorded the time it took 15 students to run a mile. The times are as follows: 9:23, 8:15, 9:23, 9:01, 6:45, 6:55, 7:20, 9:14, 6:21, 7:12, 7:34, 6:10, 9:15, 9:18. What are 4 intervals and 4 frequency? I need help pls...

Answer 1

Therefore, the four intervals are

(1) 6 - 6.59

(2) 7 - 7.59

(3) 8 - 8.59

(4) 9 - 9.59

The four frequencies are

(1) 4

(2) 3

(3) 1

(4) 6

Explanation:

From the data, we have

Interval Frequency

1st 6 - 6.59 4

2nd 7 - 7.59 3

3rd 8 - 8.59 1

4th 9 - 9.59 6

Therefore, the four intervals are

(1) 6 - 6.59

(2) 7 - 7.59

(3) 8 - 8.59

(4) 9 - 9.59

The four frequencies are

(1) 4

(2) 3

(3) 1

(4) 6