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Does the amount of sleep that students get affect their grades?

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High school students in their senior year.

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The students were picked from random high schools, but they're all in their senior year.

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There is three groups. Each group has 50 students. The first group contains students that get about 2-4 hours of sleep. Whereas the second group contains students that get 5-7 hours of sleep. Lastly, the third group contains students who get 8-10 hours of sleep.

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Our explanatory variable is the amount of sleep the students get.

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We will measure the students grades to see if the sleep they get has any affect on school.

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We randomized the students by picking them from different schools. My lurking variables would be if the students just has a hard time comprehending the subjects or if the students are in honors courses.

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None.

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The students in this experiment are not blind because they already know what grades they have in the grade book. We do not have double-blind because the researchers know what group of students get what amount of sleep.

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This has randomized block design because the students are placed In separate groups and we will measure the data from each group and compare them.

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This study was only tested on 150 students. This sample size is small compared to the amount of students in the school. The margin of error is 8%. This is a large margin of error which shows that our results do not accurately represent a good amount of the population.

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Students who get more hours of sleep getter's better grades

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This study can be replicated in the future with more students participating so that the study can be more accurate

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This is statistically significant because as the amounts of sleep increased the grades also improved and when the sleep amounts were low, the grades were also low.

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None.