Discussion and Conclusion
The weaknesses in the study are that we had a very large nonresponse bias. Also people may not have said the true amount of detentions they received or their true GPA. There is a tendency for one to say they have a higher GPA and less detentions. Also the type of people who typically receive more detentions may have been less likely to actually respond to the survey. Confounding variables in the study where the grade level of the student and the type of classes he or she is in. It is easier for a ninth grader to have a higher GPA because of the relatively few amount of classes they have in their record, as opposed to a senior who would have taken many classes. Also the type of classes affects the student's GPA as well. Students in honors classes and AP classes typically have somewhat inflated GPA's because they can receive a 4.5 or a 5.0 . We would feel comfortable extrapolating the results to similar high schools in similar areas (Public High Schools in Suburban areas). If the study was conducted in a different environment other factors may change the results such as socioeconmic status.
Conclusion!!!!
After gathering our surveys and entering the data into Minitab we did a two sample to determine if there was a difference in the mean GPA for boys and the mean GPA for girls. In this test we got a P-value of .751 which is much higher than alpha, .05. Therefore we were unable to reject the null hypothesis at the .05 level of significance. Because of this there is not sufficient evidence to say that there is a difference between the GPAs of boys and girls. We then tested to see if there was a difference in the number of detentions received by boys and the number of detentions received by girls. We did a two sample T test and got a p value of .884 Therefore we where unable to reject the null hypothesis at the .05 level of significance. Because of this there is not sufficient evidence to say that there is a difference between the number of detentions received by girls and the number of detentions received by boys.
The End!
