SCALE Subcommand (RELIABILITY command)

SCALE defines a scale for analysis, providing a label for the scale and specifying its component variables. If SCALE is omitted, all variables named on VARIABLES are used, and the label for the scale is ALL.

• The label is specified in parentheses after SCALE. It can have a maximum of 255 bytes before being truncated.
• RELIABILITY does not add any new variables to the active dataset. The label is used only to identify the output. If the analysis is satisfactory, use COMPUTE to create a new variable containing the sum of the component items.
• Variables named on SCALE must have been named on the VARIABLES subcommand. Use the keyword ALL to refer to all variables named on the VARIABLES subcommand.

Example

RELIABILITY VARIABLES = ITEM1 TO ITEM20
  /SCALE (A) = ITEM1 TO ITEM10.


RELIABILITY VARIABLES = ITEM1 TO ITEM20
  /SCALE (B) = ITEM1 TO ITEM20.

• Analyses for scales A and B both use only cases that have complete data for items 1 through 20.