Relative frequency
The question
| Pet | No pet | Total | |
|---|---|---|---|
| Grade 7 | 3 | 22 | 25 |
| Grade 8 | 18 | 18 | 36 |
| Total | 21 | 40 | 61 |
Of the 25 Grade 7 students, what percent have a pet?
%
3 out of 25
Of the 25 Grade 7 students, what percent have a pet?
How it works.
PetNo petTotalGrade 732225Grade 8181836Total214061
3out of25
3 ÷ 25=0.12→12%
Of the 25 Grade 7 students, what percent have a pet12%
- 01
"Of the 25 Grade 7 students" — that is the row this question is about.
- 02
Now the part. Of that row, 3 have a pet — the Pet column. So the fraction is 3 out of 25, not 3 out of 61.
- 03
Divide: 3 ÷ 25 = 0.12. A percent is "out of a hundred", so multiply by 100: 12%.
- 04
So the answer is 12% — 3 of the 25 Grade 7 students, and 3 ÷ 25 = 0.12, which is 12%.