Quantitative - JASP

 Use JASP for this assignment. 

Use Average Grade 8 Math Proficiency as the dependent variable

Use Enrollment, Average Grade 8 English Proficiency, and Rigorous Instruction Rating as independent variables

1) Run a multiple regression test.  Address categorical variable dummy coding, test for interaction effects between Enrollment and Average Grade 8 English Proficiency by additionally including the interaction term in the analysis

2) Interpret R, Adjusted R squared, Sig in the ANOVA table, Sig(s) in the Coefficient tables

3) Is an interaction effect between Enrollment and Average Grade 8 English Proficiency detected? Explain.

4) Run an assumptions check (include all charts and tables in your writeup. APA format expected) and report the results of each of the following:

Independence: Check Durbin-Watson value to be between 1 and 3

Multicollinearity: Check VIF less than 10

Linearity: Check predicted vs residual plot for dot pattern scatter

Homogeneity: Check residual plot for consistent spread over all predicted values

Normality: Check residual histogram and QQ plot

Referencing your evidence, report which of the above assumptions are likely violated or are feasibly not violated.