| The RELIABILITY Procedure |
FREQ Statement
- FREQ variable-name
The FREQ statement specifies a variable that provides frequency counts for
each observation in the input data set. If n is the value of
the FREQ variable for an observation, then that observation
is weighted by n. The log-likelihood
function for maximum likelihood estimation is multiplied by
n. If n is not an integer, the integer part of n is used in
creating probability plots.
You can also use
the FREQ statement in conjunction with the NENTER
statement to specify interval-censored data having a special structure;
these data are called readout data. The FREQ statement specifies a variable
in the input data set that determines the number of units failing
in each interval. See "Weibull Analysis of Interval Data with Common Inspection Schedule" for an example using the
FREQ statement with readout data.
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
