Question

The profit made by Cummings International is heavily dependent on the amount of money spent on...

The profit made by Cummings International is heavily dependent on the amount of money spent on advertising.
For five consecutive years, from 2008 – 2012, the profit and the amount spent in advertising (in millions of
dollars) is shown in the table below.


Year Money spent on advertising Profit
2008 2 12
2009 5 20
2010 7 25
2011 11 26
2012 15 40


5.1. Draw a scatter diagram depicting the data. (6)
5.2. Calculate the Pearson’s correlation coefficient. (10)
5.3. Determine the linear regression equation. (4)

Math   Statistics-And-Probability   
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