FAQ/PRsq - CBU statistics Wiki

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Sample sizes for selected values of R-squared and different numbers of groups in a one-way anova

90% power

80% power

correlation

Kendall

Spearman

Pearson

Kendall

Spearman

Pearson

0.1

1041

1013

854

1277

1111

1047

0.2

224

250

212

274

307

259

0.3

106

107

93

129

130

113

0.4

58

62

51

70

75

62

0.5

37

39

32

44

46

38

0.6

25

26

21

29

30

25

0.7

18

19

15

21

21

17

0.8

13

<14

<10

15

15

12

0.9

9

<10

<10

11

11

<10