Question

pets survey

	pets	no pets	total
7th grade	21	29	50
8th grade	15	24	39
total	49	80	129

how many 7th graders have a pet?

Explanation:

Step1: Locate 7th - grade row and Pets column

Check the table.

Step2: Read the value

The value in the intersection of 7th - grade row and Pets column is 21.

Answer:

21