Question 1
1.1 Apply your knowledge of levels of measurement and identify which levels of measurement
is represented by the following data:
a) Years covered in the South African history: 1776-1876
b) Annual income of students in a Statistics class:RO - R10,000
c) Course grades in any course: A, B, C, D, F, P, W. I.
d) Student gender: female, Male
1.2
In a simple random sample of 500 employees, 160 preferred to take training classes in the
morning rather than in the afternoon. Construct a 95% C.I. on the true proportion of employees
who favor morning training classes.
Question 2
Consider the following set of data: 5, 8, 12, 15, and 20. For this data, find the following:
a) The geometric mean,
b) Harmonic mean,
c) Compare
Question 3
If you are allocated four (4) Industrial Engineers and three (3) Mechanical engineers, How many
post graduate committees can be formed consisting of two (2) industrial engineers and one (1)
mechanical engineer.