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SUMMARY:A generalization of Fisher's exact test: rock-paper-scissors and f
 riendly ghosts -  Robin Hankin
DTSTART:20090220T160000Z
DTEND:20090220T170000Z
UID:TALK16637@talks.cam.ac.uk
CONTACT:8419
DESCRIPTION:Abstract: Fisher's exact test\, named for Sir Ronald Aylmer Fi
 sher\,\ntests contingency tables for\nhomogeneity of proportion. Here I di
 scuss a generalization of Fisher's\nexact test for\nthe case where some of
  the table entries are constrained to be zero.\nThe resulting test is\nuse
 ful for assessing cases where the null hypothesis of conditional\nmultinom
 ial distribution\nis suspected to be false.  If the (unconditional)  propo
 rtions are\nindeed identical amongst\nrows\, they may be estimated using l
 ikelihood techniques.  The test and\nestimators\nare implemented in the R 
 programming language in the form of two packages.\n
LOCATION:MR12\, CMS\, Wilberforce Road\, Cambridge\, CB3 0WB
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