Question

The two-way table represents data from a survey asking schoolchildren whether they are attending a summer camp, taking swimming lessons, or both.



Which is the joint relative frequency for school children who plan to attend camp and have swimming lessons? Round the answer to the nearest percent.

4%
19%
33%
44%

Answer 1

Answer: Last option is correct.

Step-by-step explanation:

Since we have given that

Number of frequency for school children who plan to attend camp and have swimming lessons = 42

And total number of school children surveyed for this purpose = 96

So, Joint relative frequency for school children who plan to attend camp and have swimming lessons is given by

$=\frac{\text{Number of students who takes swimming lessons and attend camp}}{\text{ Total number of students}}\\\\=\frac{42}{96}\times 100\\\\=43.75\%\\\\=44\%\ approximately$

hence, Last option is correct.

Answer 2

Joint relative frequency for school children who plan to attend camp and have swimming lessons is 44%.

What is the relative frequency?

The relative frequency is the ratio of the subgroup frequency to the total frequency.

The given information follows;

Number of frequency for school children who plan to attend camp and have swimming lessons = 42

The total number of school children surveyed for this purpose = 96

So, Joint relative frequency for school children who plan to attend camp and have swimming lessons is given by

= (total number of students who take swimming lessons and attend / total number of students) × 100

= (42 / 96 )x 100

= 43.75%

= 44%

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