__________ 1. A researcher tests whether there is any difference between how fas
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Question
__________ 1. A researcher tests whether there is any difference between how fast people work in the morning versus how fast they work in the evening. What is the NULL hypothesis?a. People who work in the morning work faster.
b. People who work at night work faster.
c. There is some difference, but which is faster is not predicted.
d. There is no difference in the speed at which people work.
__________ 2. Once a researcher has an idea for a research question, the next step is to:
a. run a statistical analysis
b. enter data into SPSS
c. develop a specific research plan to address the question
d. prepare a manuscript for publication
3. Match the research design with the appropriate statistical test:
__________ a. difference between two group means (same participants in each group) t test for dependent means
__________ b. association among variables (one predictor) correlation or bivariate prediction
__________ c. difference between group means (four groups, different participants in each group) analysis of variance
__________ d. association among variables (four predictors) multiple regression
__________ e. difference between two group means (difference participants in each group) t test for independent means
__________ 4. In a between-subjects design __________ people are in each group.
a. different
b. the same
c. more than 30
d. equal numbers of
__________ 12. When discussing the pattern in a contingency table, the word "independence" means:
a. the distribution of one variable varies over different levels of the other
b. the variables in the table should not be compared
c. the observed frequencies are larger than the expected frequencies
d. there is no relationship between the variables
__________ 13. The main idea of a chi-square test is that you:
a. test the estimated degree of fit (proportion of variance accounted for) of one variable to the other variable
b. compare the population means to see if they vary from each other more than by chance
c. compare population variances, to see if they vary from each other more than by chance
d. test how well the pattern of observed frequencies fits some expected pattern of frequencies
Explanation / Answer
__________ 1. A researcher tests whether there is any difference between how fast people work in the morning versus how fast they work in the evening. What is the NULL hypothesis? d. There is no difference in the speed at which people work. __________ 2. Once a researcher has an idea for a research question, the next step is to: c. develop a specific research plan to address the question 3. Match the research design with the appropriate statistical test: __________ a. difference between two group means (same participants in each group) t test for dependent means __________ b. association among variables (one predictor) correlation or bivariate prediction __________ c. difference between group means (four groups, different participants in each group) analysis of variance __________ d. association among variables (four predictors) multiple regression __________ e. difference between two group means (difference participants in each group) t test for independent means __________ 4. In a between-subjects design __________ people are in each group. a. different __________ 12. When discussing the pattern in a contingency table, the word "independence" means: d. there is no relationship between the variables __________ 13. The main idea of a chi-square test is that you: d. test how well the pattern of observed frequencies fits some expected pattern of frequencies
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