Question

this two - way table shows the results of asking students if they prefer to have gym class in the morning or the afternoon.

	morning	afternoon	total
grade 8	18	21	39
grade 10	12	26	38
total	45	55	100

type your answers in the boxes.

a. how many students participated in the survey?
\boxed{} students

b. how many students in grade 8 prefer to have gym in the morning?
\boxed{} students

c. how many grade 10 students participated in the survey?
\boxed{} students

d. how many students prefer to have gym in the afternoon?
\boxed{} students

Explanation:

Part a:

Step1: Identify total students

Look at the "Total" row and "Total" column in the two - way table. The value at the intersection is the total number of students who participated in the survey.
From the table, the total number of students is 100.

Part b:

Step1: Find Grade 8 morning preference

Look at the row for "Grade 8" and the column for "Morning" in the two - way table. The value in that cell is the number of Grade 8 students who prefer gym in the morning.
From the table, the number is 18.

Part c:

Step1: Find Grade 10 total

Look at the row for "Grade 10" and the "Total" column in the two - way table. The value in that cell is the number of Grade 10 students who participated in the survey.
From the table, the number is 38.

Part d:

Step1: Find afternoon preference total

Look at the "Total" row and the "Afternoon" column in the two - way table. The value in that cell is the number of students who prefer gym in the afternoon.
From the table, the number is 55.

Answer:

a. 100 students
b. 18 students
c. 38 students
d. 55 students