Task 2: Show the difference of GPA by Sex (10 Marks)

a.

Construct side-by-side boxplots for the GPA variable by the Sex variable (i.e., the two groups

are female students and male students). (4 Marks)

b.

Calculate the Q1, Q2, Q3, interquartile range and whisker limits for the GPA variable of the

female and male groups separately. (4 Marks)

c.

Use the respective median and inter-quartile range to compare the data position and

variability or spread of GPA for the female and male groups separately. (2 Marks)

[Hint: Refer to "Measures of Central Tendency" Lecture, slides 17 to 19 for the calculation of Q1 Q2

and Q3 as well as the whisker limits.