preview

Dmi Data Collection

Satisfactory Essays

DMI: Data Collection
Hypothesis: The taller a person is, the less likely it is that they miss a basket from the free throw line.
There are 3000 students at my school. For this experiment, I decided that using a sample size of 40 students will be feasible and fairly representative of the entire population. In order to try and insure that this sample best represents the school, it is important to carefully choose a sampling method which decreases any chance of bias. Originally, I wanted to use a simple random sample which would give everyone in the school an equal chance of being chosen, therefore making the results fair and not directed towards a certain group of individuals. However, getting a hold of a list of all students in the school that I can use to randomly select my sample group was not realistic. So, I decided that a voluntary response sample would be more practice in this situation. Not only does using this sample make the process less time consuming and convenient, but it also solves the problem of not being …show more content…

Firstly, non-response bias may have occurred. People who had more free time during that day or that were more outgoing were more likely to volunteer. Likewise, if I would have given an incentive to be able to get more volunteers, such as giving volunteer hours, people who need more volunteer hours would be more likely to volunteer. Although free time, being outgoing, and a need for volunteer hours are not directly correlated to basketball skills, a possible connection may be present. Also, since the experiment was conducted only once at a particular time, only people who were available at that time would have been able to participate. If there was a particular club that was going on during that time, such as a soccer team practice, then soccer player’s numbers would not be included in the data and it would be slightly

Get Access