c_gr: The c chart control for attributes

In XRSCC: Statistical Quality Control Simulation

Description

Calculates the c control chart for attributes, using a sample C of number of nonconformities. The plotted values in graph are the nonconformities number on each sample at a regular time interval when there is not a standard given.

Usage

c_gr(C)

Arguments

C	A data frame or a vector containing the number of nonconformities per sample. Note that the variable name must be the uppercase letter, like D.

Value

in.control	The under control row list for the c chart
out.control	The out of control row list for the c chart
Iteraciones	The number of iterations, in this function always will be the first and the last one
data.0	The original data frame
data.1	Subsetting the data frame with under control rows
bin	The binary values for out of control equal to one, and results under control equal to zero
Limites de Control Grafica c	The c chart control limits vector
Conclusion del proceso	The same results in a phrase as the bin values

Author(s)

Erick Marroquin

References

Montgomery, D.C. (2005) Introduction to Statistical Quality Control, 5th ed. New York: John Wiley & Sons, ISBN 0-471-65631-3

See Also

p_gr, np_gr, u_gr, P_it, NP_it, C_it, U_it

Examples

data(clothes)
c_gr(clothes)

Example output

[1] "Proceso fuera de Control en Grafica c"
$in.control
 [1]  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
[26] 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
[51] 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
[76] 76 77 78 79 80 81 82 83 85 86 87 88 89

$out.control
[1] 84 90

$Iteraciones
[1] 1

$data.0
    c
1   8
2   4
3   9
4  11
5   9
6   1
7   9
8   7
9   3
10  5
11  7
12  0
13  2
14  7
15  0
16  4
17  8
18  8
19  2
20  6
21  6
22  6
23  8
24  9
25  3
26  6
27  9
28  7
29  4
30  4
31  4
32  5
33 12
34  4
35  1
36  1
37  1
38  7
39  4
40  1
41  3
42  7
43  4
44  6
45  4
46  1
47  5
48  3
49  6
50  9
51  7
52  1
53  2
54  0
55  4
56  6
57 10
58  9
59  1
60  3
61  0
62  8
63  5
64  7
65  7
66  9
67  6
68  0
69  0
70  3
71  8
72  4
73  8
74  6
75  4
76  8
77  3
78  7
79  1
80  9
81  7
82  4
83  5
84 13
85  2
86  6
87  6
88  4
89  9
90 13

$data.1
 [1]  8  4  9 11  9  1  9  7  3  5  7  0  2  7  0  4  8  8  2  6  6  6  8  9  3
[26]  6  9  7  4  4  4  5 12  4  1  1  1  7  4  1  3  7  4  6  4  1  5  3  6  9
[51]  7  1  2  0  4  6 10  9  1  3  0  8  5  7  7  9  6  0  0  3  8  4  8  6  4
[76]  8  3  7  1  9  7  4  5  2  6  6  4  9

$bin
[1] 1

$`Limites de Control Grafica c`
    LCI.c     LCS.c      LC.p 
 0.000000 12.169802  5.277778 

$`Conclusion del proceso`
[1] "Proceso fuera de Control en Grafica c"

XRSCC documentation built on May 2, 2019, 5:11 a.m.