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Prof. Findley
PLSC 328
Assignment 4 Part 4
The proposal to amend the honor code to not allow video game systems in BYU approved
housing has been made with the intention and hope of increasing the overall GPA of BYU and increasing
the number of dates students go on.
Data was collected from a quantitative methodology class as a
sample of the BYU student population.
A regression was run comparing the effect of videogames on the
GPA of the students.
A negative correlation is seen in the data when the regression is run with all data observations.
With the data unedited there is a significance of
the seventyeighth percentile.
For every hour of
videogames played the average student’s GPA decreases by 0.017.
With the data it looks like there
would be an overall increase of the university GPA if video games systems were against the honor code
in BYU approved housing.
Further look at the data however, shows that there is an outlying observation that appears
abnormal.
To help get a better look at the actual population of BYU students it is important that outlying
observations be discarded.
Another regression of the data was run without the outlying observation.
This yielded a change in the correlation and significance of the effect of videogames on GPAs.
The
correlation is still negative but just by a very small amount.
With the outlier present the averages
student’s GPA decreased by 0.017 for every hour of videogames played.
Without the outlier the GPA of
students decreased by 0.0016 for every hour of videogames played.
The significance of these variables is
only 7 percent as well.
The R
2
value, which shows how well the regression line approximates the real
data points, is very low demonstrating that videogames played have very little effect on the GPA of
students.
Looking at the effect that videogames have on the number of dates students go on per week yields
some similar results.
Looking at all of the data we see that there is a negative correlation and it is
significant to the seventyfirst percentile.
For every hour of video games students play they go on 0.091
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 Spring '10
 FINDLEY

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