p_gr: P control chart for attributes

In XRSCC: Statistical Quality Control Simulation

Description

Calculates the p control chart for attributes, using a sample D of number of defectives or nonconforming items and a constant sample size n. The values plotted in graph are the fractions pof defectives.

Usage

p_gr(D, n)

Arguments

D	A data frame containing in one column the non conforming items, and must be integer and non negative.
n	A vector of length one, integer and nonnegative, to fix the sample size.

Value

in.control	The under control row list for the p chart
out.control	The out of control row list for the p chart
Iteraciones	The number of iterations, in this function always will be the first and the last one
data.n	The fixed sample size
data.0	The original data frame
data.1	The filtered data frame
bin	The binary values for out of control equal to one and under control equal to zero
Limites de Control Grafica p	The p 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_it, c_gr, C_it, np_gr, NP_it, u_gr, U_it

Examples

data(bottles)
p_gr(bottles, n=100)

Example output

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

$out.control
[1]  3  9 20 22

$Iteraciones
[1] 1

$data.n
[1] 100

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

$data.1
 [1] 0.01 0.09 0.03 0.05 0.06 0.03 0.04 0.09 0.01 0.03 0.03 0.02 0.04 0.01 0.01
[16] 0.09 0.03 0.07 0.04 0.07 0.02 0.02 0.02 0.03 0.01 0.03 0.03 0.02 0.04 0.04
[31] 0.05 0.03 0.01 0.02 0.06 0.01 0.04 0.01 0.03 0.06 0.03 0.04 0.04 0.03 0.00
[46] 0.01 0.09 0.03 0.05 0.06 0.03 0.05 0.02 0.04 0.02 0.01 0.03 0.03 0.02 0.02
[61] 0.04 0.02 0.03 0.03 0.04 0.04 0.02 0.06 0.08 0.05 0.03 0.03 0.02 0.01 0.04
[76] 0.02

$bin
[1] 1

$`Limites de Control Grafica p`
     LCI.p      LCS.p       LC.p 
0.00000000 0.09600496 0.03837500 

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

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