As a data scientist of a company, you want to analyze the following data collected by...

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As a data scientist of a company, you want to analyze thefollowing data collected by your company which relates theadvertising expenditure A in thousands of dollars to total sales Sin thousands of dollars. The following table shows thisrelationship
Advertising Expenditure (A) Total Sales (S)
18.6 312
18.8 322
18.8 333
18.8 317
19 301
19 320
19.2 305
Using Advertising expenditure (A) as the domain and Total Sales(S) as the range, the data is not a function because the value 18.8and 19 appear in the domain more than once with a differentcorresponding value of the range each time.
--Interpret the slope and y-intercept of this equation.
--Express this equation as a function S of A and find itsdomain.
--Predict the sales if the advertising expenditure is$25000.

Answer & Explanation Solved by verified expert

3.8 Ratings (689 Votes)

Solution intercept of the regression line can be calculated as a summationy summationX2 summationxsummationxynsummationx2summationx2 X Y XY X2 Y2 186 312 58032 34596 97344 188 See Answer

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Advertising Expenditure (A)	Total Sales (S)
18.6	312
18.8	322
18.8	333
18.8	317
19	301
19	320
19.2	305