Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA MA β FIA FMA › Correlation coefficient
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John Moffat.
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- July 1, 2015 at 10:11 am #259207
Sir, here is the question.
The X represents the advertising expenditure and y represents sales revenue. Why 0.5 is not the feasible value of correlation coefficient?
πJuly 1, 2015 at 5:42 pm #259241+ 0.5 is a feasible value.
– 0.5 is actually possible but very unlikely because you would expect advertising and sales revenue to be positively correlated and not negatively correlated.
July 2, 2015 at 5:03 pm #259350Under what circumstances that revenue will decrease while advertising expenditure increase?
July 2, 2015 at 5:45 pm #259353I can’t think of any (unless everyone hated the advertising!).
That is why I said that although it is theoretically possible it is most unlikely π
July 6, 2015 at 1:45 pm #259630ok,got it
July 6, 2015 at 1:47 pm #259633You are welcome π
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