You are hired as a tutor whilst undertaking your studies and decide to conduct your own analysis on your student group that you can then convey to your supervisor.

You have a group of 6 students with final subject marks listed below:

47, 47, 54, 66.5, 78.5, 89.5

a) Calculate the mean mark for the group.

b) Is there a mode, if so, what is its value? How would you describe this distribution of marks e.g., bimodal, multimodal, or unimodal and why?

c) What is the range of the data? What does this measure tell us (i.e., how would you comment on this to your supervisor)?