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?
Can Swim Cannot Swim Totals
7th Graders 15 60
8th Graders 45
Totals 65 40 105
To construct the missing parts of the two-way table, we need to calculate the number of 8th graders who can swim and the number of 8th graders who cannot swim.
From the given data:
- Number of 7th graders who can swim = 15
- Number of 7th graders who cannot swim = 60
- Total number of 7th graders = 15 + 60 = 75
- Number of 8th graders who can swim = 65 - 15 = 50
- Number of 8th graders who cannot swim = 40 - 60 = -20
Since the number of 8th graders who cannot swim has resulted in a negative value, there seems to be an error in the data provided. It is not feasible to have a negative number of students in a category.
Therefore, we would need to correct the data before constructing the missing parts of the two-way table.