EXERCISE 05
Linear model
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Y = b1 + b2 X
Slope:
Unit change of Y, when X increases by 1 unit.
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Example 1: Marks = 50 + 5 studyhours
When study hour increases by 1 unit (hour), estimated marks increase by 5 units.
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Example 2: Wage = 30 + 25 workhours
Int
EXERCISE 04
QUESTION 1
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Marks = 55.6148 + 6.1271 studyhours 3.0041 partyhours
(8.6671) (1.5779)
(1.5214)
n = 20 k = 3
degrees of freedom = n k = 17
a)
Find out the 99% confidence interval of B1.
Interpret the answers.
b)
Find out the 95% confidence inter
REVISION QUESTIONS
ROUND OFF ALL ANSWERS TO 4 DECIMAL PLACES, UNLESS STATED
OTHERWISE.
Question 1
The following table shows the clock auction data on price, age of clock and number of bidders.
Obs
1
2
3
4
5
6
7
8
9
10
11
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14
15
16
PRICE AGE BIDDER
12
EXERCISE 08
QUESTION 1
d = 0.575, n = 10, k ' = 2, = 0.05 . Test if positive autocorrelation is present or not.
QUESTION 2
d = 0.999, n = 20, k ' = 4, = 0.05. Test if positive autocorrelation is present or not.
QUESTION 3
d = 1.734, n = 20, k ' = 3, = 0.0