The scatter plots of a dependent variable Y against four independent variables X1, X2, X3 and X4 are given below. Scte RotA Scate Plot C ValableX1 Vanable X3 Scatter Plot B Scater Plot D -24 Vanable X4 Vanable X2 1. Which one of the following independent variables has the strongest linear relationship with Y [ Select ] 2. What is the approximate correlation coefficient of Scatter Plot C (the top right graph)? [Select ] 3. Suppose we fit a simple linear regression using X2 and Y, see Scatter plot B above (the lower left graph). The independent variable X2 explains about 42% of the total variation in the dependent variable Y. What's the sample correlation between X2 and Y? [Select] Varable Y

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