Statistical Methods for Psychology

Exercises 509

Pre Post

Home Work Home Work

Taper 7664

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Immediate 8776

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Aversion 9854

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a. Run the appropriate analysis of variance.

b. Interpret the results.

14.15 Plot the results you obtained in Exercise 14.14.

14.16 Run simple effects on the data in Exercise 14.14 to clarify the results.

14.17 The abbreviated printout in Exhibit 14.1 represents the analysis of the data in Exercise 14.5.

a. Compare this printout with the results you obtained in Exercise 14.5.

b. What does a significant Ffor “MEAN” tell us?

c. Relate MSw/in cellto the table of cell standard deviations.

BMDP2V – ANALYSIS OF VARIANCE AND COVARIANCES
WITH REPEATED MEASURES.

PROGRAM CONTROL INFORMATION
/PROBLEM TITLE IS ‘BMDP2V ANALYSIS OF EXERCISE 14.5’.
/INPUT VARIABLES ARE 3.
FORMAT IS ‘(3F2.0)’.
CASES ARE 30.
/VARIABLE NAMES ARE GROUP, PRE, POST
/DESIGN DEPENDENT ARE 2, 3.
LEVELS ARE 2.
NAME IS TIME.
GROUP = 1.
/END

CELL MEANS FOR 1-ST DEPENDENT VARIABLE
MARGINAL
GROUP = 1.0000 2.0000 * 3.0000
TIME
PRE 1 4.80000 4.70000 5.10000 4.86667
POST 2 7.00000 6.40000 4.60000 6.00000

Exhibit 14.1

(continues)