Know for Quiz #1 on A&A chapters:
*** See also Lecture Notes for Chapter 1 &
1. How a frequency table and histogram are constructed and why they are useful.
2. Be able to draw a normal distribution, a bimodal distribution, a skewed distribution (positive and negative), etc.
3. What sorts of variables have a bimodal distribution. Don't confuse the underlying reason for bimodality (for example, some people are employed and some are unemployed) with the variable that is measured (annual earned income).
4. What floor and ceiling effects are.
4. What mean, median, and mode are.
5. How skew affects the relative position of mean, median, and mode.
6. The four steps for calculating variance, and how to calculate the standard deviation.
7. How to calculate a Z-score, and how to find the raw score (X) when you have a Z-score.
Knapp Chs. 1-3:
1. What a parameter is.
2. The four parameters that statisticians typically calculate for a distribution.
3. That categorical variables such as color and suit can be "coded" as numbers (for example, black = 1, red =0).