Sharp PC-1500 Applications Manual page 78
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SHARP
PROGRAM
TITLE
I
Outline
I
X - R
CONTROL
CHART
PROGRAM NO.
PS-
B-
14
CE-150,
CE-151
and CTR
required
Based on
data,
the
control limit is
determined
to
generate an
X-R
control chart.
This program
also enables outputs of
X (mean)
and
R
(range) for each
group
of
data.
I
Operating Guide
I
For
data input
llD£FI
CD
1
"""
1
m
Used to modify
and
check
data,
as well as finding X
(mean)
and R (range).
For
settin.g coefficients on a
table
for X-R control
limit
calcula-
tion,
as
we
ll as
enabling
outputs of a central line,
upper
control
limit,
and
lower
control
limit.
For
X-
R control
chart generation.
I
Contents
I
(Formulas)
l.
The
mean
value
x
for each group is
calculated.
Total data
for each
group
x=
No.
of
da
ta
2.
Range R is
calculated.
R = Ma
x.
value of
each
group
-
Min. value
of each group
3. The
total
mean value
x
is calculated.
x=
Grand
total
of mean value
No.
of
groups
4.
The total
range R
is calculated.
R
=
Grand
total
of
range
R
No. of
groups
S. Control lines of x
control
chart.
Central
line
CL
=
x
Upper control limit UCL= x
+
A
2
R
Lower
control
limit LCL
= x
-
A
2
R
A
2
= coefficient
6
.
Control
lines
of R
control
chart.
Central
line
CL
=
R
Upper
control limit UCL
=
0
4
R
Lower
control
limit
LCL = 0
3
R (0
3
=
2
-
0
4 )
0
3
and 0
4
=
coefficients
7.
File
name
(on
cassette tape):
"X-
R DATA".
Do not sale this PDF
!!!
-72
-
I
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