O.3
이원 도수분포표
이원 도수분포표에서 빠진 수와 행·열의 비율(%) 구하기
난이도
보통
문제 수
Two-Way Frequency Tables
Skill O.3 · Scatter plots & two-way tables · ★★☆ Medium
- Name
- Date
Score/ 3
Scan for answers
Use the two-way table to answer each question.
Example
| Soccer | Basketball | Total | |
| 7th grade | 12 | 8 | 20 |
| 8th grade | 15 | 15 | 30 |
| Total | 27 | 23 | 50 |
Think: Of the 20 seventh graders, 12 chose soccer. For a percent of a row, divide by the row total; for a column, by the column total.
- 1
Passed Did not pass Total Morning class 20 30 50 Evening class 21 21 42 Total 41 51 92 What percent of the students in the evening class passed? - 2
Walks to school Rides to school Total Has a pet 14 5 19 No pet 28 28 56 Total 42 33 75 What percent of the students without a pet ride to school? - 3
Soccer Basketball Total 7th grade 11 11 22 8th grade 15 21 36 Total 26 32 58 What percent of the 7th graders chose soccer?
Answer Key
O.3 Two-Way Frequency Tables · ★★☆ Medium
- 1
- 2
- 3