Definitions for "omit"
Leave out.
To let go; to leave unmentioned; not to insert or name; to drop.
To forbear or fail to perform or to make use of; to leave undone; to neglect; to pass over.
Omit is the non-de-plume of New Zealand musician Clinton Williams. Throughout the 1980s Williams built numerous home-made electronic instruments, often with machinery gathered from second-hand shops. He worked in isolation for many years, before making contact with other musicians in the noise music cassette underground.
Number of persons who did not respond to the item. The number of persons who answered the item with the correct response, expressed as a proportion of the total number of persons on whose responses the item analysis is based (NC divided by N TOTAL). P is an index of the difficulty of the item for that group of persons.
Keywords:  combine, see
see: Combine/omit