Question

a random sample of students was surveyed and asked to list their grade level and whether or not they have a pet. results are shown in the table below, but some values are missing. fill in the missing values.

pets survey

	pets	no pets	total
7th grade	21
8th grade	29		53
total	78		148

Explanation:

Step1: Find Total No Pets

The total number of students is 148, and the total with pets is 78. So, No Pets total = Total - Pets total = \( 148 - 78 = 70 \).

Step2: Find 8th grade No Pets

For 8th grade, Total is 53 and Pets is 29. So, No Pets = \( 53 - 29 = 24 \).

Step3: Find 6th grade Pets

Total Pets is 78. 7th grade Pets is 21, 8th grade Pets is 29. So, 6th grade Pets = \( 78 - 21 - 29 = 28 \).

Step4: Find 6th grade No Pets

6th grade Total is 44, Pets is 28. So, No Pets = \( 44 - 28 = 16 \).

Step5: Find 7th grade Total

Total students: 148. 6th grade Total 44, 8th grade Total 53. So, 7th grade Total = \( 148 - 44 - 53 = 51 \).

Step6: Find 7th grade No Pets

7th grade Total is 51, Pets is 21. So, No Pets = \( 51 - 21 = 30 \).

Filling the table:

• 6th grade: Pets = 28, No Pets = 16
• 7th grade: No Pets = 30, Total = 51
• 8th grade: No Pets = 24
• Total: No Pets = 70

Answer:

The filled table is:

	Pets	No Pets	Total
7th grade	21	30	51
8th grade	29	24	53
Total	78	70	148