1: Using the data from Chapter 2 (which you should have saved, but if you didn’t re-enter it from Table 3.1) plot and interpret the following graphs: 1 An error bar chart showing the mean number of friends for students and lecturers.

 An error bar chart showing the mean alcohol consumption for students and lecturers.

 An error line chart showing the mean income for students and lecturers.

 An error line chart showing the mean neuroticism for students and lecturers.

 A scatterplot with regression lines of alcohol consumption and neuroticism grouped by lecturer/student.

 A scatterplot matrix with regression lines of alcohol consumption, neuroticism and number of friends.