Article View: sci.math.stat
Article #270Re: unweighted mean of means
From: Duncan Murdoch
Date: Thu, 03 Sep 1992 14:08
Date: Thu, 03 Sep 1992 14:08
23 lines
1411 bytes
1411 bytes
In article <winzar.73.0@newsman> winzar@newsman (Hume Winzar) writes: >Of course this does not get you arround the systematic bias created by the >propensity to answer TRUE more often. That bias results from a mis-designed questionaire. If the correct choice is randomly chosen (with equal probabilities) and the question worded to fit, then any system of picking answers that doesn't depend on knowledge about the statement will have equal chances of picking the right and wrong answers. You should also try to make knowledge of the subject matter important, e.g. don't do this: As everyone knows, 2+2 = 5. True False 2+2=4. True False As everyone knows, unbiased estimates of the variance are essential. True False Most sponsored surveys are just about this blatant in wording their questions to elicit the "correct" answer. Duncan Murdoch dmurdoch@mast.queensu.ca
Technical Details
Message-ID:
<dmurdoch.115.715529297@mast.queensu.ca>Path:
arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!torn!news.ccs.queensu.ca!mast.queensu.ca!dmurdochReferences:
<8edG3vu00WBN868HYr@andrew.cmu.edu> <winzar.73.0@newsman>Show Full Headers
Complete Article Headers
Newsgroups: sci.math.stat Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!torn!news.ccs.queensu.ca!mast.queensu.ca!dmurdoch From: dmurdoch@mast.queensu.ca (Duncan Murdoch) Subject: Re: unweighted mean of means Message-ID: <dmurdoch.115.715529297@mast.queensu.ca> Lines: 23 Sender: news@knot.ccs.queensu.ca (Netnews control) Organization: Queen's University References: <8edG3vu00WBN868HYr@andrew.cmu.edu> <winzar.73.0@newsman> Date: Thu, 3 Sep 1992 14:08:17 GMT