Table 2

Intercorrelations Matrix Between Variables in the Course Room

quiz1 gpa total final

quiz1 Pearson Correlation 1 .152 .797** .499**

Sig. (2-tailed) .121 .000 .000

N 105 105 105 105

gpa Pearson Correlation .152 1 .318** .379**

Sig. (2-tailed) .121 .001 .000

N 105 105 105 105

total Pearson Correlation .797** .318** 1 .875**

Sig. (2-tailed) .000 .001 .000

N 105 105 105 105

final Pearson Correlation . 499** .379** .875** 1

Sig. (2-tailed) .000 .000 .000

N 105 105 105 105

**. Correlation is significant at the 0.01 level (2-tailed).

Questions:

• First, report the lowest magnitude correlation in the intercorrelation matrix, including degrees of freedom, correlation coefficient, p value, and effect size. Interpret the effect size. Specify whether or not to reject the null hypothesis for this correlation.
• Second, report the highest magnitude correlation in the intercorrelation matrix, including degrees of freedom, correlation coefficient, p value, and effect size. Interpret the effect size. Specify whether or not to reject the null hypothesis for this correlation.
• Third, report the correlation between GPA and final, including degrees of freedom, correlation coefficient, p value, and effect size. Interpret the effect size. Analyze the correlation in terms of the null hypothesis.
• Interpret statistical results against the null hypothesis, and state whether it is accepted or rejected.