Assignment: Advance Biostats SPSS
Multiple Linear Regression
The testing of assumptions, recognition of limitations, and proper use of diagnostics are all necessary elements in the use of multiple linear regression for public health research. All of these elements allow biostatisticians to better assess the results of multiple linear regression models.
For this Assignment, you test that assumptions for multiple linear regression have been met, use SPSS to create a multiple linear regression, evaluate results to determine whether the model is appropriate, and finally interpret the relationships uncovered through this statistical test between the independent and dependent variables. Use the Dataset (SPSS document)
Task
1. Explain the assumptions of Linearity, Sampling independence, Normality, and Homoscedasticity (or equal variance).
1. How would you test whether these have been met? (Note: for the exam you do not need to test these assumptions)
2. Using SPSS, test the assumption of Linearity between the independent and dependent variables.
3. Using SPSS, test the assumption of Normality for the dependent variable.
2. Conduct a multiple linear regression using SPSS. Provide relevant SPSS output and assess the statistical significance of the effects of mother's Age, BMI, and Coffee (Cups per Day) on Birth weight.
3. Explain the practical implications of your finding. Include a reference to the R square of the model in your discussion.
4. Discuss whether or not there is interaction (effect modification) first between Age and BMI and second between BMI and Coffee.
Format your assignment according to the following formatting requirements:
1. The answer should be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides.
2. The response also includes a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
3. Also include a reference page. The Citations and references should follow APA format. The reference page is not included in the required page length.
Attachment:- Dataset.rar