Grazel Gegrimos Control Chart.xlsx

	B	C	D	E	F	G	H	I	J
1
2	Control Chart
3	Control Chart
4
5	Name:	Grazel Jane M. Gegrimos				Date:	10/7/2025
6	Subject:	MT 14 LEC - EE
7
8
9	Day	No. of Chat Messages	AVG	3S+	3S-	2S+	2S-	1S+	1S-
10	1	82	85	103	67	97	73	91	79
11	2	75	85	103	67	97	73	91	79
12	3	91	85	103	67	97	73	91	79
13	4	88	85	103	67	97	73	91	79
14	5	79	85	103	67	97	73	91	79
15	6	95	85	103	67	97	73	91	79
16	7	81	85	103	67	97	73	91	79
17	8	90	85	103	67	97	73	91	79
18	9	83	85	103	67	97	73	91	79
19	10	78	85	103	67	97	73	91	79
20	11	92	85	103	67	97	73	91	79
21	12	85	85	103	67	97	73	91	79
22	13	74	85	103	67	97	73	91	79
23	14	93	85	103	67	97	73	91	79
24	15	87	85	103	67	97	73	91	79
25	16	80	85	103	67	97	73	91	79
26	17	86	85	103	67	97	73	91	79
27	18	77	85	103	67	97	73	91	79
28	19	94	85	103	67	97	73	91	79
29	20	84	85	103	67	97	73	91	79
30
31
32	Mean:	84.7		2S+	97
33	SD:	6.293647591		2S-	73
34	3S+	103		1S+	91
35	3S-	67		1S-	79
36
37	Interpretation:		Based on Chart No. 1, all plotted points are within the upper and lower control limits, indicating that the process is within control. There are no points beyond
38	Interpretation:		the ±3σ limits, meaning no out-of-control conditions occurred. However, one possible 1:2s warning rule may have been violated where two points come
39			close to or slightly exceed the ±2σ boundary on the same side of the mean. This suggests a need for continued monitoring or evaluation of previous controls
40			in case variation increases in future observations.
41
42
43
44
45	Day	No. of Chat Messages	AVG	3S+	3S-	2S+	2S-	1S+	1S-
46	1	110	116	182	50	160	72	138	94
47	2	105	116	182	50	160	72	138	94
48	3	115	116	182	50	160	72	138	94
49	4	120	116	182	50	160	72	138	94
50	5	108	116	182	50	160	72	138	94
51	6	118	116	182	50	160	72	138	94
52	7	112	116	182	50	160	72	138	94
53	8	40	116	182	50	160	72	138	94
54	9	114	116	182	50	160	72	138	94
55	10	109	116	182	50	160	72	138	94
56	11	121	116	182	50	160	72	138	94
57	12	116	116	182	50	160	72	138	94
58	13	107	116	182	50	160	72	138	94
59	14	119	116	182	50	160	72	138	94
60	15	113	116	182	50	160	72	138	94
61	16	130	116	182	50	160	72	138	94
62	17	135	116	182	50	160	72	138	94
63	18	140	116	182	50	160	72	138	94
64	19	145	116	182	50	160	72	138	94
65	20	150	116	182	50	160	72	138	94
66
67
68	Mean:	116.35		2S+	160
69	SD:	22.16985863		2S-	72
70	3S+	182		1S+	138
71	3S-	50		1S-	94
72
73	Interpretation:		In Chart No. 2, the process shows one point (Day 8) below the –3 σ limit, violating the 1:3s rule (reject rule), which indicates an out-of-control condition caused
74	Interpretation:		by a special variation on that day. In addition, an upward trend from Days 13 to 20 is observed, violating the trend rule, where six or more consecutive points
75			are increasing. Therefore, the process is not in control due to both a 1:3s violation and a trend indication of a possible mean shift.
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100