A researcher reports a significant effect in some population. If she computes both an ?2 and an ?2 effect size estimate, then which estimate will be the largest?
A. ?2
B. ?2
C. It depends on the sample size.
D. It depends on the value of the t statistic.
Ans: A
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In conducting the t-test for independent means, if you ______, the two means ______.
a. reject the null hypothesis; are significantly different from each other b. accept the null hypothesis; are significantly different from each other c. do not reject the null hypothesis; are significantly equal to each other d. reject the null hypothesis; are significantly equal to each other
What type of distribution is depicted below?
A. Positive skew—Large number of scores occur below the mean. B. Positive skew—Large number of scores occur above the mean. C. Negative skew—Large number of scores occur below the mean. D. Negative skew—Large number of scores occur above the mean.
Which of the following is an appropriate developmental sequence for the use of a picture schedule based on children's visual stage?
a. photograph stage; object stage; text stage; symbolic picture stage b. object stage; symbolic picture stage; photograph stage; text stage c. object stage; photograph stage; symbolic picture stage; text stage d. symbolic picture stage; photograph stage; text stage; object stage
Which of the following best describes the goal of correlational research?
A. To obtain an in-depth look at one individual or class
B. To compare two groups of individuals under a variety of experimental conditions
C. To explain why certain conditions influence the characteristics of students
D. To describe the strength of the relation between two or more characteristics