QUESTION 22
The linear regression equation is:
A. y = 15.2-1.675x
B. y = 15.2+1.675x
C. y = -15.2-1.675x
D. y=-15.2+1.675x
(4 Marks)
QUESTION 23
On a day when the temperature is 18, the estimated number of ice-creams sold is closest to:
A. 13
B. 15
C. 17
D. 18
(4 Marks)
QUESTION 24
The price (in R) and quantity of a basket of three items for the years 2020 and 2022 are given in the table
below.
2020
2020
2022
2022
ITEM
PRICE (R)
QUANTITY
PRICE (R)
QUANTITY
X
100
200
150
250
Y
40
60
70
80
Z
20
90
40
110
Using 2020 as the base year, the Laspeyre's price index for this basket of items is:
A. 158.7%
B. 156.2%
C. 152.8%
D. 149.1%
(4 Marks)
QUESTION 25
Consider the components of a time series as shown below. The correct labels are:
A. A- Cyclical fluctuations; B - Trend; C - Seasonal fluctuations; D - Random fluctuations
B. A- Seasonal fluctuations; B - Trend; C - Random fluctuations; D - Cyclical fluctuations
C. A- Seasonal fluctuations; B - Trend; C - Cyclical fluctuations; D - Random fluctuations
D. A-Seasonal fluctuations; B - Cyclical fluctuations; C - Trend; D - Random fluctuations
(4 Marks)