COV of measurements

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

Detectable

difference in means

10%

16

63

142

251

393

565

769

1005

1272

1570

1900

2261

2653

20%

4

16

36

63

98

142

193

251

318

393

475

565

663

30%

2

7

16

21

44

63

86

112

142

175

211

251

295

40%

1

4

9

16

25

36

48

63

80

98

119

142

166

50%

1

3

6

10

16

23

31

40

51

63

76

91

106

60%

1

2

4

7

11

16

22

28

36

44

53

63

74

70%

1

2

3

5

8

12

16

21

26

32

39

46

54

80%

0

1

2

4

6

9

12

16

20

25

30

36

42

90%

0

1

2

3

5

7

10

13

16

20

24

28

33

100%

0

1

2

3

4

6

8

10

13

16

19

23

27