"Artifacts," by Scott G. Ortman

Table 35. Cross-tabulation of Condition vs. Number of Grinding Surfaces for Two-Hand Manos, Castle Rock Pueblo
Condition
Number of Grinding Surfaces Total
One Surface Two Adjacent Surfaces Two Opposite Surfaces Three Surfaces Four Surfaces
Complete count
condition
surfaces

3
25.0
18.8

1
8.3
11.1

6
50.0
40.0

2
16.7
40.0

12
100.0
23.5

Broken count
condition
surfaces

13
33.3
81.3

8
20.5
88.9

9
23.1
60.0

3
7.7
60.0

6
15.4
100.0

39
100.0
76.5

  TOTAL count
condition
surfaces

16
31.4
100.0

9
17.6
100.0

15
29.4
100.0

5
9.8
100.0

6
11.8
100.0

51
100.0
100.0

NOTES: Condition = percent within condition; surfaces = percent within number of surfaces.

Chi-Square Test Results

 Value df 2-Tailed Significance
Pearson chi-square 5.836a 4 0.212
Likelihood ratio 7.009 4 0.135
No. of valid cases 51

a Seven cells (70.0%) have an expected count of less than five. The minimum expected count is 1.18.
df = degrees of freedom.
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