a.H Students evaluation of the course they follow, askes following questions from students. Identify the type of data and measurement scale for each with relevant justifications.

i.How many interactive tutorials did you attend in this semester?

ii.What was your group assignment grade (HD, D, C, P, F)?

iii.Rate the lecturer (very effective, effective, not too effective and not at all effective)

iv.Which campus you are registered in Melbourne

b.An investor recorded the following annual returns of one of his investments. You are required to calculate and comment on;

i.Mean return.

ii.Variance and standard deviation of the return.

iii.Geometric return.

Year

2016

2017

2018

2019

2020

Return

15%

17%

19%

10%

-5%

b. An investor recorded the following annual returns of one of his investments. You are required to calculate and comment on;