Brisbane Limited has recorded the following sales information for the past six months:

The following has also been calculated:
> (Advertising expenditure) = £13500 > (Sales revenue) = £192000 > (Advertising expenditure x Sales revenue) = £447 250000 > (Sales revenue?) = £6322 000000 > (Advertising expenditure?) = £32 125000 What is the value of

b, i.e. the gradient of the regression line (see formulae 10.1 and 10.2)?

(a) 0.070

(b) 0.086

(c) 8.714

(d) 14.286 (3 marks)
ACCA - Financial Information for Management

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Advertising expenditure Sales revenue Month -*(000). (000) 12 1.5 30 2 27 3 1.75 25 4 3 40 5 2.5 32 6 2.75 38