Artifacts

by Scott G. Ortman

Table 54. Comparison of Variances (values are x 1010), Castle Rock Pueblo

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Chipped-Stone Debris (N)

Corrugated Jar Sherds Weight (g)

White Ware Bowl Sherds Weight (g)

White Ware Jar Sherds Weight (g)

Prior stratified variance

8.12

362.58

90.13

18.59

Prior SRS variance

8.77

569.03

153.37

27.36

Posterior stratified variance

5.72

211.30

41.37

10.67

Posterior SRS variance

10.57

685.48

184.76

32.96

Prior efficiency (Vstratified/ Vsrs)

0.93

0.64

0.59

0.68

Posterior efficiency (Vstratified/ Vsrs)

0.54

0.31

0.22

0.32

Poststratification gains (Vpost/ Vprior)

0.70

0.58

0.46

0.57

SRS = simple random sample; V = variance.

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