blob: c5df44549a8175976295c294e90469737bc446a1 (
plain)
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
27
28
29
30
|
//Calculate the control limits for the p-chart using 3σ limits
//page no 139
clear
clc;
d=116;
n=1000;
P1=d/n;
//Control limits for p-chart
UCL=P1+3*sqrt((P1*(1-P1))/n);
mprintf("\UCL = %.2f \n",UCL);
LCL=P1-3*sqrt((P1*(1-P1))/n);
mprintf("\LCL = %.2f \n",LCL);
CL=P1;
mprintf("\CL = %.2f \n",CL);
P1 =(116-15-18)/(18*50);
//Again control limits
UCL=P1+3*sqrt((P1*(1-P1))/n);
mprintf("\UCL = %.2f \n",UCL);
LCL=P1-3*sqrt((P1*(1-P1))/n);
mprintf("\LCL = %.2f \n",LCL);
CL=P1;
mprintf("\CL = %.2f \n",CL);
//Again one more subgroup is crossing the crossing limits
P1 =(116-15-18-12)/(17*50);
UCL=P1+3*sqrt((P1*(1-P1))/n);
mprintf("\UCL = %.2f \n",UCL);
LCL=P1-3*sqrt((P1*(1-P1))/n);
mprintf("\LCL = %.2f \n",LCL);
CL=P1;
mprintf("\CL = %.2f \n",CL);
|
