Calculate the Pearson Product Moment correlation coefficient to determine whether there is a linear relationship between sales and advertising expenditure.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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EXERCISE 1
Table below shows the sales and the advertising expenditure of Company A for the first nine months
of the year 2017.
Advertising
expenditure
(RM'000)
Sales (RM
million)
xy
y
Month
Jan
52
46
Feb
48
42
Mar
61
50
32
54
Apr
44
Mei
29
Jun
29
28
Jul
44
39
40
Aug
Sept
36
31
30
Total
Calculate the Pearson Product Moment correlation coefficient to determine whether there is a
linear relationship between sales and advertising expenditure.
Transcribed Image Text:EXERCISE 1 Table below shows the sales and the advertising expenditure of Company A for the first nine months of the year 2017. Advertising expenditure (RM'000) Sales (RM million) xy y Month Jan 52 46 Feb 48 42 Mar 61 50 32 54 Apr 44 Mei 29 Jun 29 28 Jul 44 39 40 Aug Sept 36 31 30 Total Calculate the Pearson Product Moment correlation coefficient to determine whether there is a linear relationship between sales and advertising expenditure.
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