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

In order to construct the missing parts of the two-way table, we would need to calculate the total number of seventh and eighth graders who can and cannot swim based on the given data.

First, we can calculate the total number of seventh graders who can swim by adding up the number of seventh graders who can swim in each gender category:

- For males: 10 + 15 = 25
- For females: 20

Total seventh graders who can swim: 25 + 20 = 45

Next, we can calculate the total number of seventh graders who cannot swim by subtracting the total number of seventh graders who can swim from the total number of seventh graders in each gender category:

- For males: 30 - 25 = 5
- For females: 25 - 20 = 5

Total seventh graders who cannot swim: 5 + 5 = 10

We can follow the same steps to calculate the missing parts of the table for eighth graders.

Once we have the total number of eighth graders who can and cannot swim in each gender category, we can fill in the missing parts of the two-way table.