Question

Below is the R output of a study of ACT scores for the first year of college students. This helps to see if the test scores can predict a GPA. Simply put, this ACT helps to be an explanatory var and GPA would be a response var.

Call:

Im(formula = GPA ~ ACT, data = gpadata)

Residuals:

Min 1Q Median 3Q Max

-2.74004 -0.33827 0.04062 0.44064 1.22737

Coefficients:

Estimate Std. Error t value Pr(>|t|)

(Intercept) 2.11405 .32089 6.588 1.3e-09 ***

ACT .03883 .01277 3.040 .00292 **

_ _ _

Signif codes: 0 '***' .001 '**' .01 '*' .05 '.' .1 '' 1

Residual standard error: .6231 on 118 DFreedom

Multiple R Squared: .07262, Adjusted R Squared: .06476

F-Stat: 9.24 on 1 and 118 DF, p-val: .002917

ANOVA data is:

Call: aov(formula = gpa.Im)

Terms:

ACT Residuals

Sum of Squares 3.58785 45.81761

Deg Freedom 1 118

Residual stand. error : .623125

- What's the value of intercept.

-Give confidence interval for 95% for true correlation between GPA and ACT

-If a student received a 34 on the ACT, then create a 95% prediction interval of the student's first year GPA. The sample mean ACT is 24.72

-Find the value for the MSM:

-Correleation between GPA and ACT scores?

Answer 1

I can't understand what is MSM?