1. A researcher obtains a Pearson correlation of r = 0.60 for a sample of n = 6 pairs of X and Y scores. If the researcher tests the significance of the correlation, what value will be obtained for the t statistic?
A. 0.6/1.0 = 0.6
B. 0.6/0.16 = 3.75
C. 0/6/0.8 = 0.77
D. 0.6/0.4 = 1.50
2. The Pearson correlation is calculated for a sample of n = 20 individuals. If a hypothesis test is used to determine whether the correlation is significant, what df value would be used for the t statistic?
A. 21
B. 19
C. 20
D. 18
3. A set of n = 15 pairs of X and Y scores has SSX = 10, SSY = 40, and SP = 30. What is the slope for the regression equation for predicting Y from X?
A. 10/30
B. 10/40
C. 40/10
D. 30/10
4. An analysis of variance produces SSbetween = 30, SSwithin = 60, and an F-ratio with df = 2, 15. For this analysis, what is the F-ratio?
A. 15/4 = 3.75
B. 4/15 = 0.27
C. 30/60 = 0.50
D. 60/30 = 2.00
5. A researcher used a sample of n = 50 individuals to determine whether they are any preferences between two new designs for a smart phone. If the data produce a chi-square statistic of χ2 = 6.00 what decision should the researcher make?
A. There is no significant preference for either α = .05 or α = .01.
B. There is no significant preference for α = .05 but there is for α = .01.
C. There is a significant preference for α = .05 but not for α = .01.
D. There is a significant preference for either α = .05 or α = .01.
6. An independent-measures research study compares three treatment conditions using a sample of n = 10 in each treatment. For this study, the three sample means are M1 = 1, M2 = 2, and M3 = 3. For the ANOVA, what value would be obtained for SSbetween?
A. 20
B. 2
C. 10
D. 30