Question

Think of a problem dealing with two variables (Y and X) that you may be interested in. Share your problem and discuss why a regression analysis could be appropriate for this problem. Specifically, what statistical questions are you asking? You should describe the data collection process that you are proposing but you do not need to collect any data.

Answer 1

Let we have the data of the scores in mathematics (X) and statistics (Y) of 20 students of a given class. Naturally question will arise if the marks of mathematics and statistics are somehow related and if so, can we predict the score in one subject using the another of a 21st student? These questions are parents of regression analysis.

In this particular problem, we first try to figure out if X and Y are related. As it seems scores of mathematics and statistics should show correlation. But if our data was like:

A: number of deaths due to drowning in beaches in summer

B: sale of ice cream

then regression analysis would be bogus.  

two statistical questions one should ask, which i have already emntioned earlier.

The data collecting process is quie simple. We select 20 random students, and the collect thier marks in both the subjects, that's it.

If you have any doubts, or need more elaboration, let me know in the comment section. thank you.