Psychology 230

Pearson vs. Spearman Correlation Coefficient
16 Extra Credit Points Available--Print this worksheet and neatly show your work. Attach a sheet if necessary. 
Due in lecture 4/30.

1.  Is there a linear relationship between the number of votes received by candidates for public office and the amount spent on their campaigns? Set alpha at .05.  The following sample information was gathered for a recent election:

                                    Amount Spent                Votes Received

Candidate                               (X)                                (Y)           

Weber                                  $3,000                             14,000

Taite                                    $4,000                              7,000

Spencer                                $2,000                              5,000

Lopez                                   $5,000                             12,000

Compute the appropriate correlation coefficient. Indicate your decision.

2.  A sales manager and a personnel manager were asked to rank graduates of the company's sales training program in terms of the likelihood of their success on the job.  Is there a consistent relationship between the rankings? Set alpha at .05.

Trainee                        Sales Manager                      Personnel Manager

A                                          3                                                2

B                                          1                                                5

C                                         8.5                                              9

D                                          2                                                1

E                                           4                                                6

F                                          8.5                                              12

G                                           5                                                3

H                                           7                                                4

I                                            10                                              11

J                                            6                                                7

K                                          11                                                8

L                                           12                                               10

The ranks have already been determined above.  Calculate the appropriate correlation coefficient.  Indicate your decision.