Use a standard computer program such as SPSS, OpenStat, or R to generate 5 samples of normally distributed variables with 20 observations per variable. (For SPSS the syntax for the first sample would be COMPUTE norm1 5 RV.NORMAL(0,1). For R it would be norm1 <– rnorm(20, 0, 1).)

a. Then create a Q-Q plot for each variable and notice the differences from one plot to the next. That will give you some idea of how closely even normally distributed data conform to the 45-degree line. How would you characterize the differences?

b. Repeat this exercise using n 5 50.