Linear regression is a powerful tool widely used in both research and business,

Question

Linear regression is a powerful tool widely used in both research and business, which implies that there is correlation between two variables. Thus, there is a tendency for many people to assume that if information is presented in this manner, then it must be valid. This can lead to erroneous and/or unethical presentations. Your assignment is to start a thread where you propose a relationship (real or imagined) between two variables and state an inference that can be made. Then read other proposals and offer suggestions to improve them or expand their application. Be prepared to answer questions from classmates about your proposal.

Explanation / Answer

I want to test the linear relationship between sles of TV in an electronic shop on basis of resolution of picture. i expect a positive linear relationship between the two variables.

the higher the resolution of picture , the higher its sales

regression eqn: sales = 12 + 3.6*picture_resolution

with a unit increase in picture resolution there is 3.6 units increase in sales.

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