25.11.2014 Views

Biostatistics

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

A-130 ANSWERS TO ODD-NUMBERED EXERCISES<br />

53. BBL = blood bilirubin levels<br />

Analysis of Variance for BBL<br />

Source DF SS MS F P<br />

Group 2 4077 2039 3.31 0.090<br />

Error 8 4931 616<br />

Total 10 9008<br />

Level N Mean StDev<br />

Control 4 63.50 28.25<br />

Hypercar 4 50.00 22.69<br />

Hyperosm 3 98.00 22.27<br />

Pooled StDev = 24.83<br />

Tukey’s pairwise comparisons<br />

Family error rate = 0.0500<br />

Individual error rate = 0.0213<br />

Critical value = 4.04<br />

30 60<br />

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

Control Hypercar<br />

Hypercar -36.7<br />

63.7<br />

Hyperosm -88.7 -102.2<br />

19.7 6.2<br />

55.<br />

Analysis of Variance for breathing scores<br />

Source DF SS MS F P<br />

group 2 244.17 122.08 14.50 0.000<br />

Error 38 319.88 8.42<br />

Total 40 564.05<br />

Level N Mean StDev<br />

1 13 13.231 1.739<br />

2 14 13.786 2.833<br />

3 14 18.643 3.713<br />

Pooled StDev = 2.901<br />

Tukey’s pairwise comparisons<br />

Family error rate = 0.0500<br />

Individual error rate = 0.0195<br />

Critical value = 3.45<br />

Individual 95% CIs For Mean<br />

Based on Pooled StDev<br />

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

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

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

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

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

90<br />

120<br />

Individual 95% CIs For Mean<br />

Based on Pooled StDev<br />

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

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

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

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

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

12.5<br />

15.0<br />

17.5<br />

20.0

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!