3.1. Discuss why you did or did not create a bar chart for each variable. 3.2. Discuss why you did or did not create a histogram for each variable. 3.3. Discuss why you did or did not create a frequency polygon for each variable. Compare the plots in Extra SPSS Problems 3.1, 3.2, and 3.3. 3.4. Compute the range, standard deviation, and skewness. Discuss which measures of variability are meaningful for each of the four variables. 3.5. Compute the mean, median, and mode. Discuss which measures of central tendency are meaningful for each of the four variables