this is the second time I have seen this word used: "frequentist"? What does it mean?
"Radford Neal" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > In article <[EMAIL PROTECTED]>, > Dennis Roberts <[EMAIL PROTECTED]> wrote: > > >as a start, you could relate everyday examples where the notion of CI seems > >to make sense > > > >A. you observe a friend in terms of his/her lateness when planning to meet > >you somewhere ... over time, you take 'samples' of late values ... in a > >sense you have means ... and then you form a rubric like ... for sam ... if > >we plan on meeting at noon ... you can expect him at noon + or - 10 minutes > >... you won't always be right but, maybe about 95% of the time you will? > > > >B. from real estate ads in a community, looking at sunday newspapers, you > >find that several samples of average house prices for a 3 bedroom, 2 bath > >place are certain values ... so, again, this is like have a bunch of means > >... then, if someone asks you (visitor) about average prices of a bedroom, > >2 bath house ... you might say ... 134,000 +/- 21,000 ... of course, you > >won't always be right but .... perhaps about 95% of the time? > > These examples are NOT analogous to confidence intervals. In both > examples, a distribution of values is inferred from a sample, and > based on this distribution, a PROBABILITY statement is made concerning > a future observation. But a confidence interval is NOT a probability > statement concerning the unknown parameter. In the frequentist > statistical framework in which confidence intervals exists, > probability statements about unknown parameters are not considered to > be meaningful. > > Radford Neal > > -------------------------------------------------------------------------- -- > Radford M. Neal [EMAIL PROTECTED] > Dept. of Statistics and Dept. of Computer Science [EMAIL PROTECTED] > University of Toronto http://www.cs.utoronto.ca/~radford > -------------------------------------------------------------------------- -- ================================================================= Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =================================================================
