Stats quiz 11
If the amount of variability due to within-group differences is equal to the amount of variability due to between-group differences, your F value will be equal to _______. Answers: 0 1 -1 2
0
When interpreting F(2, 27) = 8.80, p < .05, what is the between-groups df? Answers: 30 27 3 2
2
When interpreting F(2, 27) = 8.80, p < .05, what is the within-groups df? Answers: 30 27 3 2
27
When interpreting F(2, 27) = 8.80, p < .05, how many groups were examined? Answers: 30 27 3 2
3
When interpreting F(2, 27) = 8.80, p < .05, what is the total sample size examined? Answers: 30 29 3 2
30
If an ANOVA produced MSbetween = 20 and MSwithin = 5, then the F Statistic would be Answers: 4.00 .025 0.80 5.00
4.00
Which of the following is the formula for computing the F statistic? Answers: F = MSbetween ÷ MSwithin F = SSbetween ÷ SSwithin F = MSwithin ÷ MSbetween F = SSwithin ÷ SSbetween
F = MSbetween ÷ MSwithin
Factorial design is a simpler type of ANOVA in which there is only one treatment factor being explored. Answers: True False
False
When interpreting F(2, 27) = 8.80, p < .05, the obtained value is .05. Answers: True False
False
When interpreting F(2, 27) = 8.80, p < .05, you should accept the null hypothesis. Answers: True False
False
When computing the degrees of freedom for ANOVA, how is the within-group estimate calculated? Answers: n - 1 k - 1 N - k (n - 1) ÷ k
N - k
ANOVA constitutes a pairwise comparison. Answers: True False
True
When interpreting F(2, 27) = 8.80, p < .05, statistical significance has been found (use F table). Answers: True False
True
A researcher wants to create an intervention to improve the well-being of first-semester graduate students, so she gives one group of students specific doses of rocky road ice cream, the next group of students specific doses of licorice, and the third group of students specific doses of chewy fruit-flavored candies for their treatments. To analyze the differences in well-being between the types of "treatment," she would use a(n) _______. Answers: dependent-samples t-test analysis of variance independent-samples t-test repeated-measures analysis of variance
analysis of variance
The ANOVA can be used to test the differences _______. Answers: between two groups only more than two groups within a single group among three groups only
between two groups only
When computing the degrees of freedom for ANOVA, how is the between-group estimate calculated? Answers: n - 1 k - 1 N - k (n - 1) ÷ k
k - 1
What is the first step in the computation of the F statistic? Answers: setting the level of risk selecting the appropriate test computing the obtained value stating the null and research hypotheses
stating the null and research hypotheses
The ANOVA is like an extension of the _______. Answers: t-test F-test Correlation Regression
t-test
A simple analysis of variance is also called _______. Answers: the two-way analysis of variance factorial ANOVA correlational ANOVA the one-way analysis of variance
the one-way analysis of variance