SOLUTION: A study was made by a retail merchant to determine the relation between weekly advertising expenditure and sales. The following data were recorded:- Advertising Costs Sa

Question 1163179: A study was made by a retail merchant to determine the relation between weekly advertising expenditure and sales. The following data were recorded:-

Advertising Costs
Sales
40
20
25
20
30
50
40
20
50
40
25
50
385
400
395
365
475
440
490
420
560
525
480
510

Find the equation of the regression line to predict weekly sales from advertising expenditure.
Interpret regression co-efficient and y-intercept
Can we take advertising costs as dependent variable if yes then how if not then why?
Could this question be studied using correlation, if yes then how if not then why

Answer by ikleyn(52905) (Show Source): You can put this solution on YOUR website!
.

From the context, the input data should be two-column table,

but I see only one column.

With such data presentation, the problem can not be solved, and NEITHER question "how" NOR "why" can be answered.

If you are going to fix your data and to re-post to this forum, then PLEASE do not post it to me personally.

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