Relative Frequency
We are given the data:
16 0 9 7 13 9 8 18 5 17 19 10 15 8 8 3 18
Now we need to count the number of elements that lie on each interval:
0 to 3 2
4 to 7 2
8 to 11 6
12 to 15 2
16 to 19 5
Total: 17
The counts are the absolute frequency. To calculate the relative frequencies, we divide each one by 17:
2/17 = 0.12
6/17 = 0.35
5/17 = 0.29
Thus, the table of relative frequencies is:
0 to 3 0.12
4 to 7 0.12
8 to 11 0.35
12 to 15 0.12
16 to 19 0.28
The sum of the relative frequencies must be approximately 1. In this case, the sum is 0.99 because of rounding errors.