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Biostatistics

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ANSWERS TO ODD-NUMBERED EXERCISES A-131<br />

Intervals for (column level mean) - (row level mean)<br />

1 2<br />

2 -3.281<br />

2.171<br />

3 -8.138 -7.532<br />

-2.686 -2.182<br />

57. PSWQ ¼ PSWQ score<br />

Analysis of Variance for PSWQ<br />

Source DF SS MS F P<br />

Group 3 16654.9 5551.6 74.11 0.000<br />

Error 115 8614.6 74.9<br />

Total 118 25269.5<br />

Individual 95% CIs For Mean<br />

Based on Pooled StDev<br />

Level N Mean StDev -----+---------+---------+---------+-<br />

1 15 62.933 8.556<br />

(---*---)<br />

2 30 38.333 7.494 (--*--)<br />

3 19 64.158 10.259<br />

(---*---)<br />

4 55 66.536 8.678<br />

(--*-)<br />

-----+---------+---------+---------+-<br />

Pooled StDev = 8.655<br />

40 50 60 70<br />

Tukey’s pairwise comparisons<br />

Family error rate = 0.0500<br />

Individual error rate = 0.0103<br />

Critical value = 3.69<br />

Intervals for (column level mean) - (row level mean)<br />

1 2 3<br />

2 17.459<br />

31.741<br />

3 -9.025 -32.446<br />

6.575 -19.203<br />

4 -10.181 -33.329 -8.388<br />

2.975 -23.077 3.631

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