LeahProject

Research question: If I participate in two sports seasons during the school year and I get good grades during those seasons what is the reason for why they are bad during the off season? Is it because I have a ton of focus time that I don't use? Explanatory: playing sports Response: grades I will test 30 people. I expect that as the number of sports increases, the grades will increase; a positive correlation.

Here are my results:


 * < Sports (Yes or No) ||< How many (0,1,2,3) ||< GPA ||
 * < Yes ||> 3 ||> 3.89 ||
 * < Yes ||> 2 ||> 4.25 ||
 * < Yes ||> 2 ||> 4.1 ||
 * < Yes ||> 1 ||> 3.3 ||
 * < Yes ||> 2 ||> 3.2 ||
 * < Yes ||> 2 ||> 2.6 ||
 * < No ||> 0 ||> 3.3 ||
 * < Yes ||> 3 ||> 2.8 ||
 * < Yes ||> 1 ||> 3.3 ||
 * < No ||> 0 ||> 3.7 ||
 * < Yes ||> 3 ||> 4.1 ||
 * < Yes ||> 2 ||> 3 ||
 * < Yes ||> 1 ||> 3.4 ||
 * < Yes ||> 2 ||> 3.5 ||
 * < Yes ||> 2 ||> 3.45 ||
 * < No ||> 0 ||> 3.2 ||
 * < Yes ||> 2 ||> 4.5 ||
 * < Yes ||> 2 ||> 3.7 ||
 * < Yes ||> 3 ||> 4.2 ||
 * < Yes ||> 2 ||> 3.3 ||
 * < Yes ||> 2 ||> 2.5 ||
 * < No ||> 0 ||> 3.7 ||
 * < Yes ||> 2 ||> 3.6 ||
 * < Yes ||> 2 ||> 3.69 ||
 * < Yes ||> 3 ||> 3.3 ||
 * < Yes ||> 3 ||> 3.4 ||
 * < No ||> 0 ||> 3.6 ||
 * < Yes ||> 1 ||> 3.5 ||
 * < No ||> 0 ||> 3.5 ||
 * < Yes ||> 3 ||> 3.5 ||

Dependent Variable: GPA Independent Variable: How many (0,1,2,3) GPA = 3.4387719 + 0.037585139 How many (0,1,2,3) Sample size: 30 R (correlation coefficient) = 0.086822556 R-sq = 0.0075381562 Estimate of error standard deviation: 0.46319382
 * Simple linear regression results:**

Some lurking variables that could be changing the results of my experiment are that I only studied whether or not they played sports, not which sports, what seasons, their study habits, how much time the sport takes, and many more. These variables could have made my study more successful, however I didn't use them, therefore these were some lurking variables. Some other lurking variables is that these people could be a special case and not be doing the basic things that sports require. I wouldn't know because I didn't ask. For example, I would be a good example of this. I only half participate in the sport of track and field. I do not go to all the meets so there is a less chance of my grades being effected by the sport. However, I also manage the basketball team and this could be taking up my time and affecting my grades. These are some lurking variables.

The correlation coefficient says that my hypothesis was not supported by the results. The results were 0.0868 and this suggest that there isn't much of a relationship between these two factors. Also this shows a positive correlation, not negative as I thought in my hypothesis. If you look at my graph, you will see that the six people that play two and three sports are the ones that have GPAs that are over a 3.7.