Question

chapter 9: two-way tables > section exercises 9.3 > exercise 11
gender
female 3 19 18 40
total 8 35 45 88
b. interpret the marginal frequencies for the survey.
males were surveyed.
females were surveyed.
students have green eyes.
students have blue eyes.
students have brown eyes.

Explanation:

Step1: Calculate number of males

Total surveyed is 88, females surveyed is 40. So males = 88 - 40 = 48.

Step2: Number of females

From the table, female total is 40.

Step3: Green eyes total

From the table, total for green eyes (first column) is 8.

Step4: Blue eyes total

From the table, total for blue eyes (second column) is 35.

Step5: Brown eyes total

From the table, total for brown eyes (third column) is 45.

Answer:

48 males were surveyed.
40 females were surveyed.
8 students have green eyes.
35 students have blue eyes.
45 students have brown eyes.