Weakness

Our study has several key weaknesses that might have influenced the data. Not all of our surveys were returned, and the unreturned ones could have changed our P-Value significantly enough (but it’s pretty safe to say it would have still been over our alpha value). Another weakness is that alot of the people we sampled did not drive, so their data was unusable. Stratifying the sample into only 16 year old students or older eliminated most of the non-drivers, but not all. Another weakness to this study is response bias, as some people might have lied when responding to our question of “have you ever texted while driving”.

Extrapolation

Our study would be suitable for further extrapolation. This study could effectively be extrapolated across any high school in the United States, as long as the age would stay in the 16-18 year range, and the people surveyed had cell phones with texting capabilities. As long as those 2 variables stayed constant, most populations would be viable for further extrapolation.

Suggestions

There are a couple of things that could be improved on to make our study more effective. One would be to find out beforehand if our subjects drove or not, as that would eliminate any non-usable returned surveys. Another idea would have been to send out more surveys, as that might have changed our data around a bit.