9546

• UCREFRP Catalog Number: 9546
• Author: Nesler, T. P.
• Title: Interactions Between Endangered Fishes and Introduced Gamefishes in the Yampa River, Colorado, 1987-1991 - Draft Final Report.
• USFW Year: 1995.
• USFW - Doc Type: 91-29,
• Copyright Material: NO

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Table 2. Chi-square goodness of fit analysis of northern pike length frequency distributions
by year sampled for four size classes.
OBSERVED FREQUENCIES
Total length 1986-88 1989 1990 1991 TOTAL,
< 500 12 57 22 32 123
501-600 27 54 45 39 165
601-700 30 32 42 42 146
.>t701 38 30 29 15 112
TOTAL 107 173 138 128 546
EXPECTED FREQUENCIES
1986-88 1989 1990 1991 ESTIMATM
FREV
<500 24 39 31 29 0.225
501-600 32 52 42 39 0.302
601-700 29 46 37 34 0.267
> 701 22 35 28 26 0.205
TOTAL 107 173 138 128
CHI-SQUARE ESTIlVIATES
1986-88 1989 1990 1991 SUM
< 500 6.08 8.34. 2.66 0.35 17.42
501-600 0.88 0.06 0.26 0.00 1.20
601-700 0.07 4.40 0.70 1.77 6.93
> 701 11.74 0.85 0.02 4.83 17.43
L SUM 18.76 13.64 3.64 6.94 42.98*
"Expected frequencies per size group calculated from size group total/sample total
*Significant at P<0.005 for 9 df.

DRAFT
March ll, 1996
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