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2012.20 MLT
LARU224 GLVC238 Remove Lab 10
FOR ERP USE ONLY
DO NOT DISTRIBUTE
8/26/2016 Copyright 2006,2012 by AOAC International, all rights reserved.
AOAC International Interlaboratory Study Workbook
Version:
2.1
Blind (Unpaired) Replicates
Critical values for Cochran maximum variance ratio test, 2.5% significance level
Per: Horwitz, W., Pure & Appl Chem 67(2):331-343, 1995.
#
Labs
2
3
4
5
1 100.0% 100.0% 100.0% 100.0%
2 100.0% 100.0% 100.0% 100.0%
3 100.0% 100.0% 100.0% 100.0%
4 94.3% 81.0% 72.5% 65.4%
5 88.6% 72.6% 64.6% 58.1%
6 83.2% 65.8% 58.3% 52.2%
7 78.2% 60.2% 52.2% 47.3%
8 73.6% 55.6% 47.4% 43.0%
9 69.3% 51.8% 43.3% 39.3%
10 65.5% 48.6% 39.9% 36.2%
11 62.2% 45.8% 37.2% 33.6%
12 59.2% 43.1% 35.0% 31.3%
13 56.4% 40.5% 33.2% 29.2%
14 53.8% 38.3% 31.5% 27.3%
15 51.5% 36.4% 29.9% 25.7%
16 49.5% 34.7% 28.4% 24.4%
17 47.8% 33.2% 27.1% 23.3%
18 46.0% 31.8% 25.9% 22.4%
19 44.3% 30.5% 24.8% 21.5%
20 42.8% 29.3% 23.8% 20.7%
21 41.5% 28.2% 22.9% 19.9%
22 40.3% 27.2% 22.0% 19.2%
23 39.1% 26.3% 21.2% 18.5%
24 37.9% 25.5% 20.5% 17.8%
25 36.7% 24.8% 19.9% 17.2%
26 35.5% 24.1% 19.3% 16.6%
27 34.5% 23.4% 18.7% 16.1%
28 33.7% 22.7% 18.1% 15.7%
29 33.1% 22.1% 17.5% 15.3%
30 32.5% 21.6% 16.9% 14.9%
31 31.5% 21.1% 16.7% 14.4%
32 30.8% 20.5% 16.3% 14.0%
33 30.1% 20.1% 15.9% 13.7%
34 29.4% 19.6% 15.5% 13.3%
35
28.8% 19.2% 15.2%
12.9%
36 28.2% 18.7% 14.8% 12.7%
37 27.6% 18.3% 14.5% 12.4%
38 27.1% 17.9% 14.2% 12.2%
39 26.5% 17.6% 13.9% 11.9%
40 26.0%
17.2%
13.5% 11.6%
41 25.5% 16.9% 13.3% 11.4%
Number of replicates per laboratory