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This study shows that taking tests on an empty stomach can bring down test scores and teachers should allow students to eat in class. An average 3% increase of a test scores is can be the difference of failing and passing or an A or B.

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Before= Average 84.5%
After =Average 87.2%

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Before: average 75%
After: average 78.5%

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100 Lunchables =$178
100 Printed test papers=$11
144 pack of pencils=$19.99

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To replicate this experiment all that needs to happen is to choose 100 more students and provide tests and food for them.

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There is 100 students so the margin off error is only 10%. This is good because it is only 1 letter grade.

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In order to have a crossover experiment everyone would have to take the test before lunch and take it again after to get the most accurate results.

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Each student will have another student on the other side of the experiment that is around the same size, weight, and age to prevent bias.

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The students will be separated by grade level during the experiment.

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The experiment will not be able to be blind because the student will know whether they have eaten or not.

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The people who did not eat are the control group because nothing has changed in their environment.

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The response variable is how good the students did on the test. The scores will most likely vary if the student isn’t taking the test on an empty stomach.

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The explanatory variable will be whether they ate or not. Not every student will be fed.

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50 students will take a vocabulary test before lunch and 50 students will the same test after lunch.

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The experimental units will be 100 students at the high school. All students will be given a number and using a random number generator 100 people will be selected.