1. To compute the related-samples t test, we assume independence within groups and between groups.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
2. The degrees of freedom for the related-samples t test are the total number of participants minus one and not the total number of pairs minus one.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
3. The repeated-measures design is associated with greater power to detect an effect compared with the independent-samples design.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
4. The repeated-measures design is associated with greater power to detect an effect compared with the independent-samples design.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
5. An example of matching by natural occurrence would be if we matched participants based on their gender (male, female).
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
6. An example of matching by natural occurrence would be if we matched participants based on their gender (male, female).
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
7. Participants in a study for a new medicine reported significantly less pain 30 min after taking the pill than before taking the pill, t(9) = 3.804, p < .05 (w2 = 0.56). In this related-samples t test, how many participants were observed?
Answer
Correct Answer:
10
Note: This Question is unanswered, help us to find answer for this one
8. The related samples design decreases ________ thereby increasing ________, compared to the two-independent-samples design.
Answer
Correct Answer:
Standard error; power
Note: This Question is unanswered, help us to find answer for this one
9. A researcher selects a sample of 36 children for a memory task. The researcher finds that children remembered more pictures than words, t = 3.243. Use eta-squared to compute the proportion of variance for this result.
Answer
Correct Answer:
η2 = 0.23
Note: This Question is unanswered, help us to find answer for this one
10. A professor computes the mean difference in aggressive responses from participants before and after watching a video showing violence as 9.0 ± 14.5 (MD ± SD), and this difference is significant. What is the effect size for this result using estimated Cohen’s d?
Answer
Correct Answer:
D = 0.62 (medium effect)
Note: This Question is unanswered, help us to find answer for this one
11. A professor computes the mean difference in aggressive responses from participants before and after watching a video showing violence as 9.0 ± 14.5 (MD ± SD), and this difference is significant. What is the effect size for this result using estimated Cohen’s d?
Answer
Correct Answer:
D = 0.62 (medium effect)
Note: This Question is unanswered, help us to find answer for this one
12. Early experiments in learning showed that rats learned a maze quickly when rewarde A researcher records the time taken for rats to learn a route in the presence and absence of foo If the researcher tested the hypothesis that presence of food would produce faster learning, at a .05 level of significance (two-tailed test), then what is her decision if she computes t = 2.842 in a sample of eight rats?
Answer
Correct Answer:
Reject the null hypothesis; there is evidence for faster learning.
Note: This Question is unanswered, help us to find answer for this one
13. All other things being equal, as the sample size decreases, what happens to the critical value for a related-samples t test (or for any t test, for that matter)?
Answer
Correct Answer:
The critical value increases.
Note: This Question is unanswered, help us to find answer for this one
14. The denominator of the test statistic for a related-samples t test:
Answer
Correct Answer:
Estimated standard error for difference scores.
Note: This Question is unanswered, help us to find answer for this one
15. The numerator of the test statistic for a related-samples t test:
Answer
Correct Answer:
Is the mean differences observed minus the mean difference stated in a null hypothesis.
Note: This Question is unanswered, help us to find answer for this one
16. The numerator of the test statistic for a related-samples t test:
Answer
Correct Answer:
Is the mean differences observed minus the mean difference stated in a null hypothesis.
Note: This Question is unanswered, help us to find answer for this one
17. A researcher surveys the studying habits of students in his class and then matches them based on this survey, so he could study the effectiveness of group work. This procedure is called:
Answer
Correct Answer:
Matching through experimental manipulation.
Note: This Question is unanswered, help us to find answer for this one
18. A type of related samples design in which researchers measure a dependent variable for participants before and after a treatment is called a:
Answer
Correct Answer:
Pre-post design.
Note: This Question is unanswered, help us to find answer for this one
19. A type of repeated-measures design in which researchers observe the same participants across many treatments but not necessarily before and after a treatment is known as_____
Answer
Correct Answer:
Within-Subjects Design
Note: This Question is unanswered, help us to find answer for this one
20. A type of repeated-measures design in which researchers observe the same participants across many treatments but not necessarily before and after a treatment is known as_____
Answer
Correct Answer:
Within-Subjects Design
Note: This Question is unanswered, help us to find answer for this one
21. The type of repeated-measures designs includes_____
Answer
Correct Answer:
Both a and b
Note: This Question is unanswered, help us to find answer for this one
22. Related-Samples t Test is an inferential statistic used to test hypotheses concerning two related samples selected from populations in which the variance in one or both populations is known.
Answer
Correct Answer:
False
Note: This Question is unanswered, help us to find answer for this one
23. Related Sample is also known as_____
Answer
Correct Answer:
Dependent Sample
Note: This Question is unanswered, help us to find answer for this one
24. Pre-Post Design is a type of repeated-measures design in which researchers measure a dependent variable for participants _____ a treatment.
Answer
Correct Answer:
Both a and b
Note: This Question is unanswered, help us to find answer for this one
25. A research design in which pairs of participants are selected and then matched, either experimentally or naturally, based on common characteristics or traits is known as_____
Answer
Correct Answer:
All of these
Note: This Question is unanswered, help us to find answer for this one
26. Matched-Samples Design is a research design in which pairs of participants are selected and then matched _____ , based on common characteristics or traits.
Answer
Correct Answer:
Both a and b
Note: This Question is unanswered, help us to find answer for this one
27. A research design in which pairs of participants are selected and then matched, either experimentally or naturally, based on common characteristics or traits is known as_____
Answer
Correct Answer:
All of these
Note: This Question is unanswered, help us to find answer for this one
28. Estimated Standard Error for Difference Scores is an estimate of the _____ that the mean difference scores deviate from the mean difference score stated in the null hypothesis.
Answer
Correct Answer:
Both a and b
Note: This Question is unanswered, help us to find answer for this one
29. Refers to any unexplained difference that cannot be attributed to, or caused by, having different treatments.
Answer
Correct Answer:
True
Note: This Question is unanswered, help us to find answer for this one
30. Difference Score is a score or value obtained by _____ one score by another.
Answer
Correct Answer:
Subtracting
Note: This Question is unanswered, help us to find answer for this one
31. In what way the participants are related in a Dependent Sample?
Answer
Correct Answer:
Both a and b
Note: This Question is unanswered, help us to find answer for this one
Statistics (Social And Behavioral Sciences) MCQs | Topic-wise
