A Visual Approach to SPSS for Windows 2nd Edition by Leonard Stern

Exercise 4

The file Births1978.sav shows the number of births in the U.S. on each day of 1978. The data were obtained from http://www.stat.ucla.edu/data/. Use the file Births1978.sav to answer the following questions:
1. Is the distribution of the variable NumberBirth approximately normally distributed
2. Was the distribution of the variable NumberBirth approximately normal for each month of the year
3. Produce a plot of the distribution of the variable NumberBirth for each day of the week (i.e., Sunday through Saturday) so that each day's distribution of the variable can be compared. Based on the plot, does there appear to be an effect of day of the week on number of births
4. Perform the same analysis that was requested in question 3, this time using month as the factor. Does there appear to be any effect of month of the year on number of births
5. Produce a table showing mean number of births and standard deviation of this variable broken down by the variables month of the year and day of the week.