NI= is the total number of items to be read in (including those to be deleted by IDFILE= etc.). The maximum value of NI= is about 65,000 for one column responses or about 32,500 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 ^.