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Correlation coefficient

SSam11y ago
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? :)
John MoffatJohn MoffatTutor11y ago#1
+ 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.
SSam11y ago#2
Under what circumstances that revenue will decrease while advertising expenditure increase?
John MoffatJohn MoffatTutor11y ago#3
I 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 :-)
SSam11y ago#4
ok,got it
John MoffatJohn MoffatTutor11y ago#5
You are welcome :-)
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