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Unit 7 Data Analysis and Application

This assignment will help you understand proper reporting and interpretation of multiple regression. You will use the IBM SPSS Linear Regression procedure to accurately compute a multiple regression with the u07a1data.sav file located below in Resources. Use the Data Analysis and Application (DAA) Template located in Resources to write up your assignment. The deadline for submitting your work is 11:59 PM CST on Sunday of Week 7.

Step 1. Write Section 1 of the DAA. Provide a context of the u07a1data.sav data set. Specifically, imagine that you are a health researcher studying how well a measure of anxiety ( *X _{1}*) and weight (

Step 2. Write Section 2 of the DAA. Test the four assumptions of multiple regression. Begin with SPSS output of the three histograms on *X _{1}*,

Step 3. Write Section 3 of the DAA. Specify a research question for the overall regression model. Articulate a null hypothesis and alternative hypothesis for the overall regression model. Specify a research question for each predictor. Articulate the null hypothesis and alternative hypothesis for each predictor. Specify the alpha level.

Step 4. Write Section 4 of the DAA. Begin with a brief statement reviewing assumptions. Next, paste the SPSS output for the Model Summary. Report *R *and *R ^{2}*; interpret

- The means and standard deviations of each variable in the regression equation.
- The zero-order (Pearson
*r*) correlations among variables. - The
*y*-intercept. - The
*b*coefficients of each predictor with notation of calculated*p*-values for rejecting the null hypothesis. - The β coefficients of each predictor.
- The squared semipartial correlations of each predictor.
- The values of
*R*,*R*, and adjusted^{2}*R*with notation of^{2}*p*-values for rejecting the null hypothesis.

Step 5. Write Section 5 of the DAA. Discuss your conclusions of the multiple regression as it relates to your stated research questions for the overall regression model and the individual predictors. Conclude with an analysis of the strengths and limitations of multiple regression.

Submit your assignment as an attached Word document.

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