NI= number of items = (required)

Up  Previous  Next

The total number of items to be read in (including those to be deleted by IDFILE= etc.). NI= is limited to about 30000 for one column responses or about 15000 for two column responses in the standard program. NI= is usually the length of your test (or the total number of items in all test forms to be combined into one analysis).

 

Example:        If there are 230 items in your test, enter

                       NI=230                ; 230 items

 

It is easy to miscount the NI= column. Scroll to the top of the Winsteps screen and check column positions:

 

Input in process..

Input Data Record:

        1         2

1234567890123456789012345678

Richard M 111111100000000000

^P        ^I               ^N

      35 KID    Records Input.

 

^P marks the Name1=1 column position with ^.

^I marks the Item1=11 column position with ^.

^N marks the NI=18 column position with ^.


Help for WINSTEPS® Rasch Measurement Software: www.winsteps.com.