Cozby Chapter 12

1. Define descriptive statistics
2. Define the scales of measurement, know the differences between each one
3. Give examples of each one of the scales of measurement
4. Which measure of central tendency would be the most appropriate to summarize ordinal data?
5. In a positive correlation, _____ scores on one variable are associated with _____ scores on the other variable
6. Define raw data
7. What are the three criteria to describe and present the data in the most useful way?
8. What is a frequency distribution?
9. Distinguish between simple frequency distributions and grouped frequency distributions
10. Distinguish between bar graphs, frequency polygons, histograms, and pie charts.
11. Define "measures of central tendency"
12. Distinguish between the mean, median, and mode. Give examples
13. What is a measure of variability?
14. Distinguish between the standard deviation and the range.
15. What is a correlation coefficient?
16. What do the size and sign of the correlation coefficient tell us about the relationship between variables?