To find the mean number of calories per serving for the given snack foods, we first need to add the calories for each type of snack and then divide by the number of snacks.
The calorie counts are:
- Corn chips: 230 calories
- Popcorn (no butter): 25 calories
- Potato chips: 115 calories
- Pretzels: 62 calories
Now, let's calculate the total calories:
\[ 230 + 25 + 115 + 62 = 432 \text{ calories} \]
Next, we divide the total calories by the number of snack foods (which is 4):
\[ \text{Mean} = \frac{432 \text{ calories}}{4} = 108 \text{ calories} \]
So, the mean number of calories per serving for these foods is 108 calories.
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