To fill in the missing values in the two-way frequency table, we can make use of the given totals for the rows and columns.
- Let's first analyze the totals for each row and column. The table we have is structured as follows:
| Favorite Snack | Third Graders | Fourth Graders | Total | |----------------|----------------|----------------|-------| | Salty | 35 | ? | 43 | | Sweet | ? | 57 | 42 | | Total | 50 | 50 | 100 |
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We know the following:
- The total number of Third Graders is 50.
- The total number of Fourth Graders is 50.
- The total number of Salty snack lovers is 43.
- The total number of Sweet snack lovers is 42.
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Calculating the missing values:
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For Fourth Graders who like Salt: \[ \text{Fourth Graders (Salty)} = \text{Total (Salty)} - \text{Third Graders (Salty)} = 43 - 35 = 8 \]
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For Third Graders who like Sweet: \[ \text{Third Graders (Sweet)} = \text{Total (Third Graders)} - \text{Third Graders (Salty)} = 50 - 35 = 15 \]
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Now, we can fill in the missing values in the table:
| Favorite Snack | Third Graders | Fourth Graders | Total | |----------------|----------------|----------------|-------| | Salty | 35 | 8 | 43 | | Sweet | 15 | 57 | 42 | | Total | 50 | 50 | 100 |
Thus the missing values are:
- Fourth Graders (Salty): 8
- Third Graders (Sweet): 15