SOLUTION: A company analyses its sales for 5 consecutive years from 2006- 2010. The results are shown in the table below. year sales (millions of rands) 2006 20 2

Question 866791: A company analyses its sales for 5 consecutive years from 2006- 2010. The results are shown in the table below.
year sales (millions of rands)
2006 20
2007 25
2008 28
2009 22
2010 30
a) Calculate the Pearson's correlation coefficient. (Hint: Use 1, 2, 3, 4 and 5 as the independent variables corresponding to 2006, 2007, 2008, 2009 and 2010 respectively).
b) Determine the linear regression equation and use it to predict the sales in 2011.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

using Excel scatter graph

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