statistics and relative frequency. the survey. some students were surveyed to find their favorite after…
statistics and relative frequency. the survey. some students were surveyed to find their favorite after - school activity. the results of the survey are shown here. * 18 girls and 9 boys said playing sports was their favorite activity. * 9 girls and 2 boys said reading was their favorite activity. * 13 girls and 9 boys said hanging out with friends was their favorite activity. (a) complete the frequency table to show the number of boys and girls who chose each activity. results of after - school activity survey. sports. reading. friends. boys. girls. total. total.
Answer
Explanation:
Step1: Calculate number of students for sports
For sports, 18 girls and 9 boys. So number of girls for sports is 18, number of boys is 9, and total is $18 + 9=27$.
Step2: Calculate number of students for reading
For reading, 9 girls and 2 boys. So number of girls for reading is 9, number of boys is 2, and total is $9 + 2 = 11$.
Step3: Calculate number of students for hanging - out with friends
For hanging - out with friends, 13 girls and 9 boys. So number of girls is 13, number of boys is 9, and total is $13+9 = 22$.
Step4: Calculate total number of girls
Total number of girls is $18 + 9+13=40$.
Step5: Calculate total number of boys
Total number of boys is $9 + 2+9 = 20$.
Step6: Calculate total number of students
Total number of students is $40 + 20=60$.
| Activity | Girls | Boys | Total |
|---|---|---|---|
| Sports | 18 | 9 | 27 |
| Reading | 9 | 2 | 11 |
| Friends | 13 | 9 | 22 |
| Total | 40 | 20 | 60 |
Answer:
| Activity | Girls | Boys | Total |
|---|---|---|---|
| Sports | 18 | 9 | 27 |
| Reading | 9 | 2 | 11 |
| Friends | 13 | 9 | 22 |
| Total | 40 | 20 | 60 |