Discussion

Weakness of the study

We had a smaller sample size, because was less then 30, we had to check our bar graph for normality.  Another weakness in our data was the nonresponse bias.  Out of 50 questionnaires sent out, only 29 were returned.  A confounding variable in our study, resulting in responses below the national average, is that we sampled people who share almost the same career.  This causes a low mean in teachers because they generally know they would like to teach upon entering college, if not before that. 

Extrapolation

Extrapolation of our data from the reults of the test could be used in several ways.  There is a good chance our results were influenced by the fact that teachers because they generally know they would like to teach upon entering college.  With this in mind our data can only be extrapolated to teachers/high school faculty members and the number of times they choose to change their college major.  Because this study was specificaly about one career field, our results cannot be extrapolated as a means to determine an overall average for number of times a college student changes their majors in all fields. 

Suggestions

A study building upon the results of our work could surver more teachers than we did, even considering teachers from the entire district.  Another way we could expand upon the data we found is to consider taking samples of professionals from multiple fields, aside from education.  By doing this we will be able to generalize the data more, getting a better understanding of the average number of times a college student changes their major in all career types, not only education.