lab2 by uc86

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									Dr. Workman – Statistics, Summer Term


Lab 02: Name(s) ____________________________________________________

Question 1 (3 points): Attitudes for groups were measured by survey on a scale of 1 to 7, where 1 =
poor and 7 = great. Examine the following ANOVA results and state whether or not the results are
significant. Explain which group(s) has the best attitude, assuming the results are statistically significant:

ATTITUDE: Dependent Variable
                  Sum of Squares             df        Mean Square        F         Sig.

 Between Groups                  69.565       3                23.188    12.630    .000

    Within Groups                84.455      46                 1.836

              Total            154.020       49


Tukey HSD:
                                Sig.
(I) GROUP      (J) GROUP
        1              2       .029
                       3       .901
                       4       .000

          2               1    .029
                          3    .031
                          4    .133

          3               1    .901
                          2    .031
                          4    .000

          4               1    .000
                          2    .133
                          3    .000

ATTITUDE
      Group              N        Mean                SD
          1             13        2.7692              1.2352
          2             12        4.3333              1.0731
          3             12        2.7500              1.5448
          4             13        5.5385              1.5064
       Total            50        3.8600              1.7729
Dr. Workman – Statistics, Summer Term


Question 2 (3 points): You are a manager of large retail store. Your sales staff has been given a
personality test called Selling Styles (S2). Your staff has the following scores on the test:


                 Sales Person          S2 Score
                 Mike                              22
                 Jose                              13
                 Albert                            19
                 Marta                             19
                 Lori                              20
                 Yusef                             16
                 Sandeep                           20
                 Brita                             21
                 Pinaki                            38
                 Mustafa                           23
                 Ellen                             14


Determine the Z score for a new employee, Fred, who received a 30 on the test.

Z-Score Formula = Z = X -  / 

**Show your work (and calculate it my hand)!
Dr. Workman – Statistics, Summer Term




Question 3 (4 points): For the following data – compute (by hand) a Pearson correlation for Number of
Stock Trades (X) and Gains/Losses (Y). Show all of your work:

Stock Trades: 4, 7, 4, 9, 12, 22, 19
Gains/Losses: 3, -2, 2, -5, 2, -9, -7

								
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