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We randomly surveyed Ball state students and professors in the atrium on their average hours of sleep According to the National Sleep Found...

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For our Data Analysis Project, we decided to examine the amount of hours that college students receive each night.  We chose this question because we expected there to be a diverse range of hours because college students generally have many obligations and stay up late to study or work on homework.  However, after collecting data, we discovered that a majority of students received between 5-8 hours of sleep a night.  Out of the 50 students we interviewed, 40 students fell within that range.

After examining the data, we discovered that the mean was 6.48, the median was 6.5, the mode was 7, and the midrange was 7.  The measure of central tendency that best describes this data would be the mean because there wasn’t a large range of numbers and there weren’t any extreme outliers.  We decided to group the data into sets of 2 hours, beginning with 1-2 hours of sleep and ending with 11-12 hours of sleep. The range of the data equaled 10, with 12 hours being the longest amount of sleep that a student received and 2 hours being the shortest amount.  The peak of the graph is between 5-6 hours and 7-8 hours with 20 students for each group set.

The data is not spread out very far, which is evident through the standard deviation which equaled 1.89.  The majority of the data is centered within the 5-8 hours of sleep range and that is clearly seen in the graphs that we created.  The frequency distribution is what we expected because we assumed there would be an average amount; however, we expected the average amount of sleep to be lower based on our initial idea of college students staying up late at night.

The line graph and histogram both display the data in a way that you can clearly see the peak where students receive between 5-8 hours of sleep. The pie graph shows the numbers in the data, but it does not have the same impact as the line graph and histogram because the large peak is not as noticeable. Therefore, the line graph or histogram would be the preferred graph to display this specific data set.