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The RELIABILITY Procedure 
Table 30.30: Analysis Options
Option  Option Description 
CONFIDENCE=number  specifies the confidence coefficient for all confidence intervals. The number must be between 0 and 1. The default value is 0.95 
CONVERGE=number  specifies the convergence criterion for maximum likelihood fit. 
CONVH=number  specifies the convergence criterion for the relative Hessian convergence criterion 
CORRB  requests parameter correlation matrix 
COVB  requests parameter covariance matrix 
FITTYPE=  specifies method of estimating distribution parameters 
LSYX  least squares fit to the probability plot. The probability axis is the dependent variable. 
 LSXY  least squares fit to the probability plot. The lifetime axis is the dependent variable. 
 MLE  maximum likelihood (default) 
 MODEL  use the fit from the preceding MODEL statement 
 NONE  no fit is computed 
 WEIBAYES  Weibayes method 
<(CONFIDENCECONF=number)>  The number is the confidence coefficient for the Weibayes fit. The number is between 0 and 1, with a default value of 0.95. 
ITPRINT  requests iteration history for maximum likelihood fit 
LRCL  requests likelihood ratio confidence intervals for distribution parameters 
LRCLPER  requests likelihood ratio confidence intervals for distribution percentiles 
LOCATION=number < LINIT >  specifies fixed or initial value of location parameter 
MAXIT=number  specifies maximum number of iterations allowed for maximum likelihood fit 
NOPCTILES  suppress computation of percentiles 
PCTLIST=numberlist  specifies list of percentages for which to compute percentile estimates. The numberlist must be a list of numbers separated by blanks or commas. Each number in the list must be between 0 and 100. 
PPOS=  specifies plotting position type. 
EXPRANK  expected ranks 
MEDRANK  median ranks 
MEDRANK1  median ranks (exact formula) 
KM  KaplanMeier 
MKM  modified KaplanMeier (default) 
PPOUT  request table of cumulative probabilities 
PSTABLE=number  specifies stable parameterization. The number must be between zero and one. See "Stable Parameters" for further information. 
RELATION=ARRHENIUS  ARRHENIUS2  LINEAR  POWER  specifies type of relationship between life and stress. This determines the horizontal scale used in the relation plot. See Table 30.45 for definitions of the transformations. 
READOUT  analyzes data with readout structure 
SCALE=number < SCINIT >  specifies fixed or initial value of scale parameter 
SHAPE=number < SHINIT >  specifies fixed or initial value of shape parameter 
SINGULAR=number  specifies singularity criterion for matrix inversion 
SURVTIME=numberlist  requests that survival function be computed for values in numberlist 
THRESHOLD=number  specifies a fixed threshold parameter. See Table 30.37 for the distributions with a threshold parameter. 
Option  Option Description 
CENSYMBOL=symbol  (symbol list)  specifies symbols for censored values. The symbol is one of the symbol names (plus, star, square, diamond, triangle, hash, paw, point, dot, circle) or a letter (A Z). If you are creating overlaid plots for groups of data, you can specify different symbols for the groups with a list of symbols or letters, separated by blanks, enclosed in parentheses. If no CENSYMBOL option is specified, the symbol used for censored values is the same as for failures. 
HOFFSET=value  specifies an offset for horizontal axis 
INBORDER  requests a border around plots 
JITTER=number  specifies amount to jitter overlaying plot symbols, in units of symbol width 
LFIT=linetype  specifies a line style for fit line and confidence curves 
LBOXES=number  specifies a line style for boxplots 
NOCENPLOT  suppresses plotting of censored data points 
NOCONF  suppresses plotting of percentile confidence curves 
NOFIT  suppresses plotting of fit line and percentile confidence curves 
NOFRAME  suppresses frame around plotting area 
NOPPLEGEND  suppresses legend for overlaid probability plots 
NORPLEGEND  suppresses legend for relation plot 
PLOTDATA <DATA  MEDIANS  BOXES>  requests that the data be plotted on the relationplot and specifies the representation of the data populations to be plotted 
PLOTFIT <numberlist>  specifies that percentiles of the fitted distribution be plotted on the relation plot. The optional numberlist is a list of percentiles (between 0 and 100), and, if not specified, the 50th percentile (median) is plotted. 
PPLEGEND = legendstatementname  NONE  identifies a LEGENDn statement to specify legend for overlaid probability plots 
PPLOT  places a probability plot on the same page as the relation plot 
RPLEGEND = legendstatementname  NONE  identifies a LEGENDn statement to specify legend for the relation plot 
TURNVLABELS  vertically strings out characters in labels for vertical axis 
VOFFSET=value  specifies length of offset at upper end of vertical axis 
WFIT=linetype  specifies line width for fit line and confidence curves 
Option  Option Description  
HREF < (INTERSECT) >=valuelist  requests reference lines perpendicular to horizontal axis. If (INTERSECT) is specified, a second reference line perpendicular to the vertical axis is drawn that intersects the fit line at the same point as the horizontal axis reference line. If a horizontal axis reference line label is specified, the intersecting vertical axis reference line is labeled with the vertical axis value.  
HREFLABELS=('label1' ... 'labeln')  specifies labels for HREF=lines  
HREFLABPOS=n  specifies vertical position of labels for HREF=lines.
The valid values for n and the corresponding label placements are
shown below.
 
LHREF=linetype  specifies a line style for HREF=lines  
LSREF=linetype  specifies a line style for SREF= lines  
LVREF=linetype  specifies a line style for VREF= lines  
SREF=valuelist  specifies reference lines perpendicular to horizontal stress axis  
SREFLABELS=('label1' ... 'labeln')  specifies labels for SREF= lines  
SREFLABPOS=n  specifies horizontal position of labels for SREF= lines.
The valid values for n and the corresponding label placements are
shown below.
 
VREF < (INTERSECT) >=valuelist  requests reference lines perpendicular to vertical axis.If (INTERSECT) is specified, a second reference line perpendicular to the horizontal axis is drawn that intersects the fit line at the same point as the vertical axis reference line. If a vertical axis reference line label is specified, the intersecting horizontal axis reference line is labeled with the horizontal axis value.  
VREFLABELS=('label1' ... 'labeln')  specifies labels for VREF= lines  
VREFLABPOS=n  specifies horizontal position of labels for VREF= lines.
The valid values for n and the corresponding label placements are
shown below.

Option  Option Description 
FONT=font  specifies a software font for text 
HEIGHT=value  specifies height of text used outside framed areas 
INFONT=font  specifies a software font for text inside framed areas 
INHEIGHT=value  specifies height of text inside framed areas 
Option  Option Description 
LAXIS=value1 to value2<by value3>  specifies tick mark values for the lifetime
axis. value1, value2, and value3 must be numeric, and value1 must be
less than value2.
The lower tick mark is value1. Tick marks are drawn at
increments of value3.
The last tick mark is the greatest value that does not exceed value2.
If value3 is omitted, a value of 1 is used.
This method of specification of tick marks is not valid for logarithmic
axes.
Examples of LAXIS= lists are
laxis = 1 to 10 laxis = 0 to 200 by 10 
LGRID=number  specifies a line style for all grid lines. The number is between 1 and 46 and specifies a linestyle for grids. 
LIFELOWER  LLOWER=number  specifies the lower limit on the lifetime axis scale. The LLOWER option specifies number as the lower lifetime axis tick mark. The tick interval and the upper lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. 
LIFEUPPER  LUPPER=number  specifies the upper limit on the lifetime axis scale. The LUPPER option specifies number as the upper lifetime axis tick mark. The tick interval and the lower lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. 
MPGRID  adds a minor grid for the probability axis 
MINORLOGGRID  adds a minor grid for log axes 
NOGRID  suppresses grid lines 
NOLLABEL  suppresses label for life, or analysis variable, axis 
NOLTICK  suppresses tick marks and tick mark labels for lifetime or analysis variable axis 
NOPLABEL  suppresses label for probability axis 
NOPTICK  suppresses tick marks and tick mark labels for probability axis 
NOSLABEL  suppresses label for stress axis 
NOSTICK  suppresses tick marks and tick mark labels for stress axis 
NSTRESSTICK=number  specifies the number of tick intervals for stress axis for relation plot 
NTICK=number  specifies the number of tick intervals for the lifetime axis. This option has no effect if the LAXIS option is used. 
PCTLOWER  PLOWER=number  specifies lower limit on probability axis scale 
PCTUPPER  PUPPER=number  specifies upper limit on probability axis scale 
STRESSLOWER  SLOWER=number  specifies lower limit on stress axis scale 
STRESSUPPER  SUPPER=number  specifies upper limit on stress axis scale 
PAXISLABEL=`string'  specifies label for probability axis 
WAXIS=n  specifies line thickness for axes and frame 
Option  Option Description 
DESCRIPTION=`string'  description for graphics catalog member 
NAME=`string'  name for plot in graphics catalog 
Table 30.36: Color and Pattern Options
Option  Option Description 
CAXIS=color  color for axis 
CBOXES=color  color for box frame for boxplots 
CBOXFILL=color  color for filling boxes for boxplots 
CCENSOR=color  color for filling censor plot area 
CENCOLOR=color  color for censor symbol 
CFIT=color  color for fit line and confidence curves 
CFRAME=color  color for frame 
CGRID=color  color for grid lines 
CHREF=color  color for HREF=lines 
CPLOTFIT=color  color for percentile lines 
CSREF=color  color for SREF= lines 
CTEXT=color  color for text 
CVREF=color  color for VREF= lines 
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