List one unclear concept regarding regression and provide, Ask an Expert

Statistics

1. List one unclear concept regarding regression and provide an example from your personal or work life where regression could be used to show a relationship between two variables.

2. Correlation does not equal causation. That is very important to understand when interpreting regression. Can anyone elaborate for me?

One should never use a regression line to predict the dependent response variable when the independent value is outside of the data range of the original data set that was used to fit the line. Explain why.

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