Sample sizes for selected values of R-squared and different numbers of groups in a one-way anova
|
90% power |
80% power |
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correlation |
Kendall |
Spearman |
Pearson |
Kendall |
Spearman |
Pearson |
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0.1 |
1041 |
1013 |
854 |
1277 |
1111 |
1047 |
||||||
0.2 |
224 |
250 |
212 |
274 |
307 |
259 |
||||||
0.3 |
106 |
107 |
93 |
129 |
130 |
113 |
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0.4 |
58 |
62 |
51 |
70 |
75 |
62 |
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0.5 |
37 |
39 |
32 |
44 |
46 |
38 |
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0.6 |
25 |
26 |
21 |
29 |
30 |
25 |
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0.7 |
18 |
19 |
15 |
21 |
21 |
17 |
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0.8 |
13 |
<14 |
<10 |
15 |
15 |
12 |
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0.9 |
9 |
<10 |
<10 |
11 |
11 |
<10 |