RELATIVE STANDARD DEVIATION PLOT
RELATIVE STANDARD DEVIATION PLOT
RELATIVE STANDARD DEVIATION PLOT
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<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong><br />
Graphics Commands<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong><br />
PURPOSE<br />
Generates a subsample relative standard deviation versus subsample index plot.<br />
DESCRIPTION<br />
The relative standard deviation is the standard deviation divided by the absolute value of the mean times 100. The subsample relative<br />
standard deviation is the relative standard deviation of the data in the subsample. The relative standard deviation plot is used to answer<br />
the question: “Does the subsample spread change over different subsamples?” It consists of:<br />
Vertical axis = subsample relative standard deviation;<br />
Horizontal axis = subsample index.<br />
In addition, a horizontal line is drawn representing the full sample relative standard deviation. The appearance of the 2 traces is<br />
controlled by the first 2 settings of the LINES, CHARACTERS, SPIKES, BARS, and similar attributes.<br />
SYNTAX<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong> <br />
where is the response (= dependent) variable;<br />
is the subsample identifier variable (this variable appears on the horizontal axis);<br />
and where the is optional.<br />
EXAMPLES<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong> Y X<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong> Y TAG SUBSET TAG > 2<br />
DEFAULT<br />
None<br />
SYNONYMS<br />
RELSD <strong>PLOT</strong>, <strong>RELATIVE</strong> SD <strong>PLOT</strong>, RELS <strong>PLOT</strong>, RS <strong>PLOT</strong>, and RSD <strong>PLOT</strong> are synonyms for <strong>RELATIVE</strong> <strong>STANDARD</strong><br />
<strong>DEVIATION</strong> <strong>PLOT</strong>.<br />
RELATED COMMANDS<br />
<strong>RELATIVE</strong> STAND <strong>DEVIATION</strong> = Compute the relative standard deviation of a variable.<br />
<strong>RELATIVE</strong> VARIANCE <strong>PLOT</strong> = Generate a relative variance plot.<br />
CHARACTERS = Sets the type for plot characters.<br />
LINES = Sets the type for plot lines.<br />
MEAN <strong>PLOT</strong> = Generates a mean plot.<br />
SD <strong>PLOT</strong> = Generates a standard deviation plot.<br />
BOX <strong>PLOT</strong> = Generates a box plot.<br />
XBAR CHART = Generates a mean control chart.<br />
<strong>PLOT</strong> = Generates a data or function plot.<br />
APPLICATIONS<br />
Exploratory Data Analysis<br />
IMPLEMENTATION DATE<br />
88/2<br />
2-204 March 11, 1997 DATA<strong>PLOT</strong> Reference Manual
Graphics Commands<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong> <strong>PLOT</strong><br />
PROGRAM<br />
SKIP 25<br />
READ GEAR.DAT DIAMETER BATCH<br />
LINE BLANK DASH<br />
CHARACTER X BLANK<br />
XTIC OFFSET 0.2 0.2<br />
Y1LABEL <strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong><br />
X1LABEL SAMPLE BATCH<br />
TITLE AUTOMATIC<br />
RELSD <strong>PLOT</strong> DIAMETER BATCH<br />
1<br />
RELSD <strong>PLOT</strong> DIAMETER BATCH<br />
X<br />
<strong>RELATIVE</strong> <strong>STANDARD</strong> <strong>DEVIATION</strong><br />
0.9<br />
0.8<br />
0.7<br />
0.6<br />
0.5<br />
0.4<br />
X<br />
X<br />
X<br />
X<br />
X<br />
X<br />
X<br />
X<br />
X<br />
0.3<br />
1 2 3 4 5 6 7 8 9 10<br />
SAMPLE BATCH<br />
DATA<strong>PLOT</strong> Reference Manual March 11, 1997 2-205
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