PSYC 510 Quiz Two Group Designs

PSYC 510 Quiz Two Group Designs

1. When conducting a Dependent-Samples (Matched-Pairs, Paired Samples) T-Test, the degrees of freedom is calculated using the following equation/symbol:
2. When conducting an Independent Samples T-Test in SPSS, which of the following is the “grouping” variable?
3. To ensure the sample is representative of the population about whom one is trying to generalize, one should use:
4. Which of the following is NOT an assumption for an independent samples t-test?
5. When entering data into SPSS for an independent samples t-test, the independent variable will be entered:
6. When entering data into SPSS for a correlated groups t-test, the independent variable will be entered:
7. If a teacher wants to assess whether there is a difference between males and females on test performance, the null hypothesis would be:
8. To try to make experimental groups as equivalent as possible before beginning any manipulations, one should use:
9. If a teacher administers a test and everyone scored 100% on it, s/he should be concerned about:
10. When conducting an Independent Samples t-test in SPSS, if Levene’s Test for Equality of Variances is significant, you should:
11. A researcher examined number of monthly meetings (2 or 4) on job satisfaction. If the t obtained for a correlated groups t-test was 2.50, df = 3, and the t critical = 2.353, what should s/he conclude?
12. In an experimental study of the effects of anxiety on appetite, where subjects are randomly assigned to either an anxiety group or the no-anxiety group, anxiety is the:
13. Discrete variables are to _____ and continuous variables are to _____.
14. Which of the following represents the best operational definition of hunger?
15. An observed score is comprised of the
16. Which of the following is a participant (subject) variable?
17. Seven students reported the following individual earnings from their sale of wrapping paper: $7, $13, $3, $5, $2, $9, and $3. In this distribution of individual earnings, the mean is _____ the mode and _____ the median.
18. Jill collects data on the participants in her study by writing down a full narrative description of everything they do. Jill is using a(n)
19. Mail surveys are to _____ as personal interviews are to _____.
20. When there is a _____ relationship, as scores on X increase, scores on Y also increase.
21. The _____ distribution is a set of distributions that, although symmetrical and bell- shaped, are not normally distributed.
22. is a procedure which allows us to predict an individual’s score on one variable based on knowing one or more other variables.
23. When using an independent-groups t test, the difference between the means is divided by the standard error of the
24. Internal validity is
25. If researchers reported that, for a correlated-groups design, t(20) = 3.57, p<.05, you can conclude that
26. For an independent-groups t test, the value of Cohen’s d describes
27. In an experimental study of the effects of exercise on stress, exercise is the
28. The alternative hypothesis for a two-tailed independent-groups t test states that
29. When using a correlated-groups t test, df =
30. In an experimental study of the effects of exercise on stress, stress is the
31. Which of the following t test results has the greatest chance of statistical significance?
32. To say that an experiment contains a confound means that
33. If the null hypothesis is true, then the t test should be close to
34. If an independent-groups t test has seven participants in each group, then the degrees of freedom are
35. One advantage of the correlated-groups t test over the independent-groups t test is that it reduces the error variance due to
36. Briefly explain the confounds of history and maturation.
37. For an independent-groups t test, effect size can be measured using
38. A design in which the same participants are used in each condition is a _____ design.
39. A problem for within-subjects designs in which the order of the conditions has an effect on the dependent variable is
40. A limitation in the ability to differentiate between scores at the bottom of the scale is a _____ and a limitation in the ability to differentiate between scores at the top of the scale is a _____