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Re: st: Item difficulty

From   "Jeremy Miles" <>
Subject   Re: st: Item difficulty
Date   Fri, 23 Mar 2007 09:31:56 -0700

The simplest way of thinking about this is that the difficulty is the
mean score.  The harder the item is, the fewer people will get it

Usually when people are talking about item difficulty they are talking
about IRT.  There's more than one way to do IRT in Stata.  Type:

-findit irt-

To get some starters.


On 23/03/07, Vanessa Mahlberg <> wrote:
Hi everybody,

can anybody help me with the right stata command for calculating item
I donīt know the real English description for stata.

Thanks a lot for your support. Have a nice weekend

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Jeremy Miles
Learning statistics blog:

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