ABSTRACT
The topic of our study was “Is your cumulative Grade Point Average (GPA) higher for living in a two or more parent household rather than living in a single parent household?” We started the project by browsing the internet and looking for past data done on this topic. We used Google.com to look for this data. At first it was hard to find data on this topic, so we had to find different ways to type it into Google. Towards the end of our search, we lucked out and found some data on our topic. We later created a survey to determine if a student lived with one parent or more, their grade point average, and their age. We used Minitab’s random generator on the list of all of North Olmsted High Schools students to get a random selection of 150 students. From this we distributed surveys, and received our results. We entered our data into Minitab and ran a two sample t-test to achieve our final results.
We got a p-value of 0.94, which is well above any reasonable level of
significance. So
we failed to reject our null hypothesis at any reasonable
level of significance because our P-value is much greater than Alpha (0.94).
Therefore, there is insufficient evidence to say that the true mean average of
two-parent or higher household children have a higher Grade Point Average than
those children from single parent households.
We also tested male versus female Grade Point Average, where our
null hypothesis was there is no difference between the two genders and our
alternative hypothesis was that there is a difference in the means between the
two genders. We rejected the null hypothesis at the 0.05 level of
significance because our p-value was less than Alpha. Therefore, we have
sufficient evidence to say that there is a difference in the true mean grade
point average between males and females.
Even though we have gotten both conclusions, we still have some weakness
in our studies. For example, we had
a good amount of response bias, with people not filling out all of their survey.
Also, some people might have written down false grade point averages.
Our findings could be extrapolated to cities that are near the same
population as