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Question
Variables like a subject's gender or ethnicity that are included in an experimental analysis are known as which type of variable?a. blocking variables
b. covariates
c. main variables
d. confounds
Answer
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Related questions
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Sketch an example of each of the following (be sure to label everything clearly):
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The arrangement of the parts of a research report needed to create a good report is known as the ______.
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When no direction of a relationship is stated in the hypothesis, a one-tailed test is appropriate.
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The independent samples t-test tests the differences between means taken from two independent samples or groups.
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A cross-tabulation is a simple way to describe the relationships between two groups.
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The type of measurement, the nature of the comparison, and the number of groups to be compared influence the statistical choice.
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One way to interpret the meaning of the results of the t-test is to focus on the ________ and the group means.
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When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable, a(n) _____ test is appropriate.
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Practically speaking, what is the first thing a researcher should do when interpreting ANOVA results?
a. examine the actual means for each group
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The key statistical test for an ANOVA model is the _____.
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Which of the following is the sum of differences between the group mean and the grand mean summed over all groups for a given set of observations?
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In a study comparing the means of two groups in which there are 45 males in Group 1 and 37 females in Group 2, the degrees of freedom for this study when using the t-test for the difference between means is:
a. 84
b. 80
c. 82
d. 160
Q:
In using the t-test to compare the means of two groups, the degrees of freedom are calculated as _____.
a. n1 - n2- 2
b. n1+ n2- 2
c. n1x n2-2
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Compare and contrast exploratory, descriptive, and causal research. Which approach is the best?
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Checking the data collection forms to correct omissions, illegibly written responses, and the consistency of answers is called ______.
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Any procedure that involves selecting a small number of people who are part of a larger population of people is called ______.
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Information from a marketing research study conducted by the company last year assessing consumers' attitudes toward the company's brands is an example of ______.
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The application of computation, summarizing, and reasoning to understand the gathered information is called _____.
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b. unobtrusive method
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All of the following are examples of an observation study EXCEPT ____.
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