Two-Way Tables Practice
Complete this assessment to review what you've learned. It will not count toward your grade.
3 of 53 of 5 Items
Question
Use the table to answer the question.
Can Swim Cannot Swim Totals
7th Graders 15 60
8th Graders 45
Totals 65 40 105
The table shows data for seventh and eighth graders who can and cannot swim. How would you construct the missing parts of the two-way table?
(2 points)
Can Swim Cannot Swim Totals
7th Graders
15 60
8th Graders
45
Totals 65 40 105
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To construct the missing parts of the two-way table, you need to find the totals for each category.
For 7th graders who can swim, you would add up the number of 7th graders who can swim which is 15, and the total number of students who can swim which is 65. So, the total number of 7th graders who can swim would be 65 - 15 = 50.
For 8th graders who can swim, you would subtract the number of 7th graders who can swim which is 15, from the total number of students who can swim which is 65. So, the total number of 8th graders who can swim would be 65 - 15 = 50.
For 7th graders who cannot swim, you would subtract the number of 7th graders who can swim which is 15, from the total number of 7th graders which is 60. So, the total number of 7th graders who cannot swim would be 60 - 15 = 45.
For 8th graders who cannot swim, you would subtract the number of 8th graders who can swim which is 45, from the total number of 8th graders which is 105. So, the total number of 8th graders who cannot swim would be 105 - 45 = 60.
Therefore, the completed two-way table would look like this:
Can Swim Cannot Swim Totals
7th Graders 50 45 95
8th Graders 20 40 60
Totals 70 85 155