Assigning Data to Roles
To run the Replace
Missing Values task, you must select an input data source. To filter the input data
source, click 
.
.
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Role
|
Description
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|---|---|
|
Roles
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|
|
Replace
missing values with the mean
|
replaces missing values
with the mean for the variable.
|
|
Replace
missing values with the pseudo-median
|
replaces missing values
with the pseudo-median of the variable. If there is no nonmissing
value, the pseudo-median is 0.
|
|
Replace
missing values with a random number
|
replaces missing values
with a random value that is drawn between the minimum and maximum
of the variable. If there is no nonmissing value, the random value
is 0.
|
|
Additional Roles
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|
|
Frequency
count
|
lists a numeric variable whose
value represents the frequency of the observation. If you assign a
variable to this role, the task assumes that each observation represents n observations,
where n is the value of the frequency variable.
If n is not an integer, SAS truncates it. If n is
less than 1 or is missing, the observation is excluded from the analysis.
The sum of the frequency variable represents the total number of observations.
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