Question

Multiple Comparisons Dependent Variable:   Score Tukey HSD (I) Condition (J) Condition Mean Difference (I-J) Std. Error...

Multiple Comparisons

Dependent Variable:   Score

Tukey HSD

(I) Condition

(J) Condition

Mean Difference (I-J)

Std. Error

Sig.

95% Confidence Interval

Lower Bound

Upper Bound

Condition A

Condition B

-3.100

1.657

.258

-7.56

1.36

Condition C

-4.300

1.657

.062

-8.76

.16

Condition D

-6.700*

1.657

.001

-11.16

-2.24

Condition B

Condition A

3.100

1.657

.258

-1.36

7.56

Condition C

-1.200

1.657

.887

-5.66

3.26

Condition D

-3.600

1.657

.150

-8.06

.86

Condition C

Condition A

4.300

1.657

.062

-.16

8.76

Condition B

1.200

1.657

.887

-3.26

5.66

Condition D

-2.400

1.657

.478

-6.86

2.06

Condition D

Condition A

6.700*

1.657

.001

2.24

11.16

Condition B

3.600

1.657

.150

-.86

8.06

Condition C

2.400

1.657

.478

-2.06

6.86

*. The mean difference is significant at the 0.05 level.

Interpret the Post Hoc test above.

a.

Condition D is significantly higher than Condition A

b.

Condition C is significantly higher than Condition A

c.

Condition D is significantly lower than Condition A

d.

Condition B is significantly lower than Condition C

Homework Answers

Answer #1

'Correct choice is a ) Condition D is significantly higher than Condition A".

From the confidence intervals of the difference between the means we conclude that there is only one pair of conditions A and D which have a significantly different means.

Because the coonfidence interval for the difference of means of that pair does not include zero.

From the difference ( mean of condition A - mean of condition B ) we get negative value. Also the upper bount of this interval is -2.24 which is negative. So we can say that the mean of condition D is significantly greater than the mean ofcondition A.

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