(8/27/10) - Intro to Statistics

1.  List three ways to express a probability (fractions, ratios, percent)

2.  Define the 4 different types of variables (ordinal, nominal, interval, ratio)

3.  Given a variable, determine the type (ordinal, nominal, interval, ratio)

4.  Define the measures of central tendency (mean, median, mode) and measures of variability (range, variance, standard deviation).

5.  Given a data set, calculate the three measures of central tendency and select the one that provide the least bias

6.  List the three types of frequency distributions (symmetrical, positively skewed, negatively skewed)

7.  When presented with a graph of frequency distribution be able to distinguish those variables that fall outside of 2 standard deviations from the mean

8.  Define z score, t score

9.  Understand the relationship between population mean, z score and probability

10. Define 95% confidence intervals

11. Use 95% confidence intervals to determine precision