Question

The table shows the number of students in a school who like dodgeball and/or ping pong:Like DodgeballDo Not Like DodgeballTotalLike Ping Pong261844Do Not Like Ping Pong243256Total5050100What is the relative frequency, by row, of students who like both dodgeball and ping pong? (4 points)0.220.400.480.59

Answer 1

When a relative frequency is determined based upon a row or column, it is called a "conditional" relative frequency.

The relative frequency by row can be calculated by dividing the frequency in question by the sum of the frequencies in that row.

From the question, the number of students who like both dodgeball and ping pong is 26. The total number of students who like ping pong (the row under consideration) is 44.

Therefore, the relative frequency is calculated to be:

`\Rightarrow(26)/(44)=0.59`

The LAST OPTION is correct.