Which is a possible interpretation of this Tukey post hoc test? 1. The groups wi

Question

Which is a possible interpretation of this Tukey post hoc test?

1. The groups with significantly different mean GPA's are 1 and 4, 2 and 4, and 4 and 5.
2.   Groups 1 and 4 have significantly different mean GPA's. No other two groups have significantly different mean GPA's.
3.   The groups with significantly different mean GPA's are 1 and 2, 1 and 3, and 1 and 4, and 1 and 5.
4.   Groups 1 and 3 do not have significantly different mean GPA's, but all other pairs of groups do have significantly different GPA's.

Explanation / Answer

Correct option

2.   Groups 1 and 4 have significantly different mean GPA's. No other two groups have significantly different mean GPA's

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