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(Choose 1 answer)
(See picture)
☐ A
A. 85.18+1.51x
☐ C
B. 85.18 1.51x
C. 85.18x+1.51
☐ E
D. 85.18x 1.51
A market trader sells ball-point pens on his stall. He sells the
pens for a different fixed price, x pence, in each of 4 weeks.
He notes the number of pens, y, that he sells in each of these 4
weeks. The results are shown in the following table
✗
12
15
20
25
y
69
60
55
48
E. None of the other choices
is correct
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Find the simple linear regression model y = a + bx
using the method of least squares
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sh the exam.
