To Study the Effect of Fluoride in Preventing Tooth Decay

Multiple Choice

To study the effect of fluoride in preventing tooth decay, researchers counted the number of fillings in the teeth of 28 patients and recorded these results:
5, 7, 16, 21, 16, 23, 17, 8, 12, 3, 9, 2, 8, 17, 12, 19, 14, 10, 13, 8, 14, 15, 14, 14, 6, 10, 12, 11
Create a table to tally the results.

A) Number of fillings Frequency 1-5 3
6-10 9
11-15 12
16-20 7
21-25 2
B) Number of fillings Frequency 1-5 2
6-10 8
11-15 12
16-20 5
21-25 2
C) Number of fillings Frequency 1-5 3
6-10 8
11-15 12
16-20 5
21-25 1
D) Number of fillings Frequency 1-5 12
6-10 9
11-15 12
16-20 7
21-25 3
E) Number of fillings Frequency 1-5 3
6-10 8
11-15 10
16-20 5
21-25 2