Kizspy | Question: 52
(Choose 1 answer)
(See picture)
A. 2.61
B. 2.66
C. 2.80
D. 3.12
It is believed that GPA (grade point average, based on a four point
scale) should have a positive linear relationship with ACT scores.
Given below is the Excel output for predicting GPA using ACT
scores based a data set of 8 randomly chosen students from a Big-
Ten university.
Regressing GPA on ACT
HOOVER LAW.COM
R. Square
Regression Statistics
Multiple R
0.7598
0.5774
Adjusted R
Square
0.5069
Standard Error
0.2691
Observations
$
ANOVA
Significance
af
SS
MS
F
Regression
Residual
Total
1
0.5940 0.5940 8.1986
0.0286
6
0.4347 0.0724
7
1.0287
Standard
Intercept
ACT
0.5681
0.1021
Coefficients Error 1 Stat P-value Lower 95% Upper 95%
0.9284 0.6119 0.5630 -1.7036
0.0356 2.8633 0.0286 0.0148
2.8398
0.1895
Use the above information to find the predicted value of GPA when
ACT=20.
