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The results are not statistically significant because the changes are too small and could happen by chance.

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Control: 9th=7.6, 10th=6.5, 11th=8.1, and 12th=7.9. Case: 9th=7.9, 10th=7.1, 11th=8.4, and 12th=8.9

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We can do the same type of experiment at another high school.

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+/- 7.07% margin of error.

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Each group will switch to the other treatment after the first memory test.

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This study cannot be blinded because the subjects will know if they are playing video games or not.

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The control group for this study is the lack of video games.

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A lurking variable can be if the person doesn’t play video games or what type of game they are playing.

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The response variable for this study is the number of questions answered correctly.

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The explanatory variable for this study is video games vs lack of video games.

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Each grade would be randomly separated into two groups. One group will not play video games while the other group will play video games for at least an hour. Both groups will take a memory test after a week.

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Students were chosen through the process of random stratified sampling.

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For our study, we had a total of 200 high school students. There were 50 each students for each grade.

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Do video games help with memory?