Question

You are provided with information on income and expenditure of domestic workers
from a census of population and housing.
Income (X)
60
80
100
120
140
Expenditure (Y)
50
79
80
110
120
41
50
95
115
140
59
61
88
100
131
40
67
96
119
125
55
75
91
88
133
Using the table above,
a) Plot a regression line. Distinguish between the population regression line and
sample regression line.
[4 Marks]
b) Derive the unconditional expenditure.
[3 Marks]
c) By how much does the regression line overestimate or underestimate
expenditure production when income is 140.
[3 Marks]
d) What kind of scale measures the variables given? Distinguish it from the others.
[5 Marks)​

Answer 1

Answer:

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