1. Oskar computes a 2 goodness-of-fit test and finds a negative 2 obtained value
ID: 3249238 • Letter: 1
Question
1.
Oskar computes a 2 goodness-of-fit test and finds a negative 2obtained value. What should he conclude?
Select one:
a. He made a mistake somewhere in his computations
c. Fail to reject the null hypothesis
d. Reject the null hypothesis
2.
A study evaluated the effectiveness of three types of therapy in producing self-reliance. The researcher also assessed sex because she thought the therapy might affect males and females differently. An independent groups design was used with 5 participants per cell. What is the design of the study?
Select one:
a. 3 x 2 factorial
b. 3 x 2 x 5 factorial
d. 3 x 5 factorial
3.
Fisher's LSD test is most useful when
Select one:
a. you have a nonsignificant overall F.
c. you have many means.
d. you have two or three means.
3.
In two-way ANOVA, a main effect for variable A means that
Select one:
a. the effect of variable A is significant when averaged over all levels of variable B.
b. variable A has a greater effect than variable B.
d. the effect of variable A is the same over all levels of variable B.
4.
The primary reason we use a scatterplot to view data for correlation and linear regression is
Select one:
a. to determine if the relationship is linear or nonlinear.
b. to compute the magnitude of the relationship.
c. to determine the direction of the relationship.
5.
With all other factors held constant, as the effect of the independent variable decreases, power will __________ and the probability of a Type II error will __________.
Select one:
a. increase; decrease
c. decrease; increase
d. increase; increase
Explanation / Answer
Correct Answers:
1. a. He made a mistake somewhere in his computations
2. b. 3 x 2 x 5 factorial
3. a. the effect of variable A is significant when averaged over all levels of variable B.
4. a. to determine if the relationship is linear or nonlinear.
5. a. increase; decrease
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