1. MOCK MIDTERM EXAM 1.Define the mean, median, and mode. When will they all have the same values? How do they differ when the distribution of a variable is skewed to the right? 2.What does the standard deviation indicate? Give a hypothetical example. 3.What is a “standard score”? What uses might it have? 4.Define three measures of dispersion. 5.Explain the idea of “dependent” and “independent” and “intervening” variables.

2. Mock Midterm (continued) 1.How and why does Peter Smith select levels of measurement for his study of democracy in Latin America? Does he use more than one level? 2.Describe two of Smith’s principal findings. 3. How does Roy Licklider select levels of measurement for his analysis of civil wars? 4. What are Licklider’s principal findings?

3. Mock Midterm (continued) 1.What are the special properties of the arithmetic mean? 2.What is the formula for computation of the standard deviation? 3.Find the median and compute the means and standard deviation (for a given set of numbers). 4.What is chi-square? Define in words and give computing formula.