In order to determine whether the differences between group means are statistically significant, ANOVA examines the differences
A. between groups.
B. within groups.
C. between and within groups.
D. neither between nor within groups.
Answer: C
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According to Wilson, all of the following are examples of why class and not race are better explanations for large levels of poor blacks in many inner cities, EXCEPT
a. Blacks lack marketable skills due to past discrimination b. The economic conditions of inner cities has worsened and the middle class has fled c. There is a concentration of poverty in inner cities and increases in family disruptions d. An increase in the number of role models of blacks working in stable jobs for those who are young.
A good summary quickly reviews every specific finding
a. True b. False Indicate whether the statement is true or false
Social interaction means that
a. person A influences person B. b. persons A and B are influenced by person C. c. person A acts toward person B. d. persons A and B act in relation to one another.
What is the main difference between Z score and t score?
A) t scores are used when the study requires a one-tailed test B) t scores are used when the population variance is unknown C) t scores are used whenever the sample size is greater than 30 D) t scores are only used when inferences are made about other samples