Problem
1. What is a measure of central tendency? Distinguish between the mean, median, and mode.
2. What is a measure of variability? Distinguish between the standard deviation and the range.
3. What is a correlation coefficient? What do the size and sign of the correlation coefficient tell us about the relationship between variables?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.