An article reports the results of an analysis of salespersons\' performance leve

Question

An article reports the results of an analysis of salespersons' performance level
as a function of two factors: task difficulty and effort. Included in the article is the fol-
lowing ANOVA table:

a. How many levels of task difficulty were studied?
b. How many levels of effort were studied?
c. Are there any significant task difficulty main effects?
d. Are there any significant effort main effects?
e. Are there any significant interactions of the two factors? Explain.

Variable df F-Value p Task Difficulty 1 0.39 0.5357 Effort 1 53.27 <0.0001 Interaction 1 1.95 0.1649

Explanation / Answer

a) We have to find levels of task difficulty, We know that degrees of freedom for task difficulty = 2 - 1 = 1

So levels = 2

b) We know that degrees of freedom for effort = 2 - 1 = 1

So levels for effort = 2

c) P value for task difficulty = 0.5357 which is greater than 0.05 so task difficulty is not significant.

d) P value for task difficulty = < 0.0001 which is less than 0.05 so effort is significant.

e) P value for interaction = 0.1649 which is greater than 0.05 so interaction is not significant.

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