COUN 6360 Week 6 Competency Quiz; Psychometrics

1. Question: Jerome has scored a 10 on a test. How has he done? 2. Question: Measures of central tendency tell you something about the middle of a series of numbers but hardly anything about the variability of a set of numbers. 3. Question: A histogram is the preferred method over the cumulative distribution for conveying information about the percentile rank. 4. Question: On a normally distributed curve, which is true? 5. Question: If an individual takes a test, and if you know an individual's raw score, the mean of the group of individuals who took the test, and the standard deviation of the group, you can tell the relative position of the individual within his or her group. 6. Question: Approximately 2 percent of people do lower than 3 standard deviations below the mean. 7. Question: On negatively skewed curves, the mean is lower than the median, which is lower than the mode. 8. Question: Histograms and frequency polygons are visual representations of frequency distributions. 9. Question: Approximately 84 percent of people do higher than 1 standard deviation below the mean. 10. Question: If Juan has scored a 53 on a test, what can we say about how he has done?