Statistics Seminar - Gary Lorden

Event Details
  • Date/Time:
    • Thursday November 19, 2015 - Friday November 20, 2015
      3:00 pm - 2:59 pm
  • Location: Advisory Board Room, GC 402
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Summary Sentence: Statistics Seminar - Gary Lorden

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TITLE: Confidence Intervals for a Proportion - the Good, the Bad, and the Ugly


Introductory statistics books teach how to calculate confidence intervals for a proportion as an easy application of formulas for the standard error in sampling from binomial or hypergeometric distributions.   Assurances that “the approximation is good if the sample size n is at least 30” are typical.  But even for much larger n the performance of the usual confidence intervals can best be described as “ugly”.   Using better approximate methods only improves the results to “bad”.  Analyzing how to get “good” performance turns out to be interesting and forces us to address questions about what we want confidence intervals to do.


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In Campus Calendar

School of Industrial and Systems Engineering (ISYE)

Invited Audience
Undergraduate students, Faculty/Staff, Graduate students
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  • Created By: Anita Race
  • Workflow Status: Published
  • Created On: Nov 13, 2015 - 6:55am
  • Last Updated: Apr 13, 2017 - 5:17pm