A machine has four heads. Samples of n =3 units are selected from each head, and the and R values for an important quality characteristic are computed. The data are shown in Table 10E.4. Set up group...

TABLE 1 0 E .4

Data for Exercise 10.5

Head

Sample

1

2

3

4

Number

R

R

R

R

1

53

2

54

1

56

2

55

3

2

51

1

55

2

54

4

54

4

3

54

2

52

5

53

3

57

2

4

55

3

54

3

52

1

51

5

5

54

1

50

2

51

2

53

1

6

53

2

51

1

54

2

52

2

7

51

1

53

2

58

5

54

1

8

52

2

54

4

51

2

55

2

9

50

2

52

3

52

1

51

3

10

51

1

55

1

53

3

53

5

11

52

3

57

2

52

4

55

1

12

51

2

55

1

54

2

58

2

13

54

4

58

2

51

1

53

1

14

53

1

54

4

50

3

54

2

15

55

2

52

3

54

2

52

6

16

54

4

51

1

53

2

58

5

17

53

3

50

2

57

1

53

1

18

52

1

49

1

52

1

49

2

19

51

2

53

3

51

2

50

3

20

52

4

52

2

50

3

52

2