A paper by R. N. Rodriguez ("Health Care Applications of Statistical Process Control: Examples Using the SAS® System," SAS Users Group International: Proceedings of the 21st Annual Conference, 1996) illustrated several informative applications of control charts to the health care environment. One of these showed how a control chart was employed to analyze the rate of CAT scans performed each month at a clinic. The data used in this example are shown in the Table below. NSCANB is the number of CAT scans performed each month and MMSB is the number of members enrolled in the health care plan each month, in units of member months. DAYS is the number of days in each month. The variable NYRSB converts MMSB to units of thousand members per year, and is computed as follows: NYRSB = MMSB(Days/30)/12000. NYRSB represents the "area of opportunity." Construct an appropriate control chart to monitor the rate at which CAT scans are performed at this clinic. Month NSCANB MMSB Days NYRSB Jan. 94 50 26838 31 2.31105 Feb. 94 44 26903 28 2.09246 March 94 71 26895 31 2.31596 Apг. 94 Мay 94 53 26289 30 2.19075 53 26149 31 2.25172 Jun. 94 40 26185 30 2.18208 July 94 Aug. 94 Sept. 94 Oct. 94 41 26142 31 2.25112 57 26092 31 2.24681 49 25958 30 2.16317 63 25957 31 2.23519 Nov. 94 64 25920 30 2.16000 Dec. 94 62 25907 31 2.23088 Jan. 95 67 26754 31 2.30382 Feb. 95 58 26696 28 2.07636 March 95 89 26565 31 2.28754
A paper by R. N. Rodriguez ("Health Care Applications of Statistical Process Control: Examples Using the SAS® System," SAS Users Group International: Proceedings of the 21st Annual Conference, 1996) illustrated several informative applications of control charts to the health care environment. One of these showed how a control chart was employed to analyze the rate of CAT scans performed each month at a clinic. The data used in this example are shown in the Table below. NSCANB is the number of CAT scans performed each month and MMSB is the number of members enrolled in the health care plan each month, in units of member months. DAYS is the number of days in each month. The variable NYRSB converts MMSB to units of thousand members per year, and is computed as follows: NYRSB = MMSB(Days/30)/12000. NYRSB represents the "area of opportunity." Construct an appropriate control chart to monitor the rate at which CAT scans are performed at this clinic. Month NSCANB MMSB Days NYRSB Jan. 94 50 26838 31 2.31105 Feb. 94 44 26903 28 2.09246 March 94 71 26895 31 2.31596 Apг. 94 Мay 94 53 26289 30 2.19075 53 26149 31 2.25172 Jun. 94 40 26185 30 2.18208 July 94 Aug. 94 Sept. 94 Oct. 94 41 26142 31 2.25112 57 26092 31 2.24681 49 25958 30 2.16317 63 25957 31 2.23519 Nov. 94 64 25920 30 2.16000 Dec. 94 62 25907 31 2.23088 Jan. 95 67 26754 31 2.30382 Feb. 95 58 26696 28 2.07636 March 95 89 26565 31 2.28754
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Construct a Controls Chart
Transcribed Image Text:Problem 4.
A paper by R. N. Rodriguez ("Health Care Applications of Statistical Process Control:
Examples Using the SAS® System," SAS Users Group International: Proceedings of
the 21st Annual Conference, 1996) illustrated several informative applications of control
charts to the health care environment. One of these showed how a control chart was
employed to analyze the rate of CAT scans performed each month at a clinic. The data
used in this example are shown in the Table below. NSCANB is the number of CAT
scans performed each month and MMSB is the number of members enrolled in the
health care plan each month, in units of member months. DAYS is the number of days
in each month. The variable NYRSB converts MMSB to units of thousand members per
year, and is computed as follows: NYRSB = MMSB(Days/30)/12000. NYRSB
represents the "area of opportunity." Construct an appropriate control chart to monitor
the rate at which CAT scans are performed at this clinic.
Month
NSCANB
MMSB
Days
NYRSB
Jan. 94
50
26838
31
2.31105
Feb. 94
44
26903
28
2.09246
March 94
71
26895
31
2.31596
Apг. 94
May 94
53
26289
30
2.19075
53
26149
31
2.25172
Jun. 94
40
26185
30
2.18208
July 94
Aug. 94
Sept. 94
41
26142
31
2.25112
57
26092
31
2.24681
49
25958
30
2.16317
Oct. 94
63
25957
31
2.23519
Nov. 94
64
25920
30
2.16000
Dec. 94
62
25907
31
2.23088
Jan. 95
67
26754
31
2.30382
Feb. 95
58
26696
28
2.07636
March 95
89
26565
31
2.28754
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