A researcher conducts a one-way ANOVA comparing satisfaction scores for three gr

Question

A researcher conducts a one-way ANOVA comparing satisfaction scores for three groups of patients: in Hosptial A, in Hosptial B, an in Hosptial C. Possible scores on the satisfaction scale range from 20 to 80 points. Descriptive statistics for the three groups are presented below.

Hosptial A: Mean- 50.3, SD= 23.2

Hosptial B: Mean= 41.2, SD= 26.8

Hosptial C: Mean= 39.5, SD= 28.2

a) Suppose that the results of ANOVA came out to be significant and one of the questions the researcher was specifically interested in answering was if which groups had significantly differs from which. What would she use to answer her question?

b) What would significant results from a) indicate? Comment in relation to hypotheses

Explanation / Answer

(a) Suppose that the results of ANOVA came out to be significant and one of the questions the researcher was specifically interested in answering was if which groups had significantly differs from which. In such a case, Tukey HSD is applied to find the specific pairs of hospitals that differ significantly.

(b) Significant results from Tukey HSD will indicate that pairs of hospitals which significantly differ in the satisfaction scores

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