Typo in Example 5.18

Edward Kao is engaged in a detailed parallel reading of Monte Carlo Statistical Methods and of Introducing Monte Carlo Methods with R. He has pointed out several typos in Example 5.18 of Monte Carlo Statistical Methods which studies a missing data phone plan model and its EM resolution. First, the customers in area i should be double-indexed, i.e.

$Z_{ij}\sim\mathcal{M}(1,(p_1,\ldots,p_5))$

which implies in turn that

$T_i=\sum_{j=1}^{n_j}Z_{ij}$ .

Then the summary T should be defined as

$\mathbf{T}=(T_1,T_2,\ldots,T_n)$

and $W_5$ as

$W_5=\sum_{i=m+1}^nT_{i5},$

given that the first m customers have the fifth plan missing.

This entry was posted on October 3, 2010 at 12:09 am and is filed under Books, R, Statistics, University life with tags EM algorithm, missing data, Monte Carlo Statistical Methods, typos. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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