58 Statistics – 2
| T | F | |
|---|---|---|
| 1. Analysis of variance enables a test of significance of multiple repeated mean scores on a measure of a normally distributed variable. |  |  |
| 2. The Barnum effect explains in part people’s belief in astrology. |  |  |
| 3. The chi-squared test can be used to compare the Ham-D scores between patients treated with an experimental antidepressant drug and placebo. |  |  |
| 4. The chi-squared test could be used in a study of response to a new antidepressant at four 3-monthly intervals in one hospital population. |  |  |
| 5. Correlation coefficient refers to how one variable alters with change in another paired variable. |  |  |
| 6. Correlation coefficient ‘r’ may be used when studying non-linear relationships. |  |  |
| 7. In a normal distribution, 68% of the population lie within one standard deviation of the mean. |  |  |
| 8. Standard error of a proportion will depend on the proportion in the wider population. |  |  |
| 9. The Hawthorne effect can be a source of error. |  |  |
| 10. The least squares method is used for normally distributed continuous data. |  |  |
| 11. Logistic regression is used for categorical variables. |  |  |
| 12. The arithmetic mean is equal to the median when the distribution of scores is unimodal and symmetrical. |  |  |
| 13. The null hypothesis is that the two populations being compared are different. |  |  |
| 14. Parametric statistics are generally more powerful than non-parametric tests. |  |  |
| 15. If, in a 60-year-old man, the probability of having A is 0.2, and B is 0.1, and both are independent, then the probability of having neither is 0.7. |  |  |
| 16. Logistic regression is done by the least squares method. |  |  |
| 17. In the design of an experimental study, prospective methods are relatively inexpensive. |  |  |
| 18. In psychological assessment, the response set is the responses the subject believes the interviewer wants. |  |  |
| 19. Snowballing can be used for random sampling. |  |  |
| 20. In a study of the ego-strength of 16-year-old females working in a clothes factory, as an indicator of the ego-strength of all 16-year-old girls in the same city, the sample is biased. |  |  |
| 21. A treatment trial shows no significant difference in efficacy between two antidepressants. This may be because the sample size considerations were based on active drug versus placebo comparison. |  |  |
| 22. A result statistically significant at a level of 5% implies that the result could not be accepted as valid. |  |  |
| 23. A specific test has a low number of false negatives. |  |  |
| 24. Instruments need to result in a normal distribution of results to have validity. |  |  |
25.
Related posts: Stay updated, free articles. Join our Telegram channel
Full access? Get Clinical Tree
Get Clinical Tree app for offline access
|
