Sales staff
Induction score
Final score
x Y
1 51 75
2 52 72
3 59 82
4 45 67
5 61 75
6 54 79
7 56 78
8 67 82
9 63 87
10 53 72
(a) Calculate the sample correlation coefficient by hand.
(b) By use of a spreadsheet calculate the sample correlation coefficient.
(c) Using a spreadsheet produce a graph of the results
(d) What do you deduce from the above and what actions do you suggest? [LO2]