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Will students who eat breakfast perform better on a math test than students who have not eaten a morning meal?

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We gathered 100 students, grades 9-12

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50 subjects were randomly assigned to eat breakfast. The other 50 subjects were told not to.

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The explanatory variable is whether they eat breakfast or not

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Math test scores

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Took volunteers from various grade levels at the local high school

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We randomized the subjects grade levels to ensure that the results are accurate with different ages

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The control group is the subjects who are not eating breakfast

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Unable to blind this experiment because the subjects have to know if they are eating breakfast or not

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The subjects were all volunteers so thy were not paid

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The results showed that over 68% of students who ate breakfast did better on the math test than those who did not

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To replicate this we will use 100 new subjects to make sure the results are accurate. We will use a different school and possibly different grade levels

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We matched up people of the same age and grade in order to more easily compare results

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The sample size is 100 students

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The study is now being used as an example at the school. It shows why all students should be eating a healthy breakfast before school