Te mean, the variance, the median, the mode are quantities which are computed theoretically for a distribution.
Then , we have the sample mean, sample variance, sample median which are random variables computed from samples. Like any random variables the sample mean sample variance and sample median have a variance...
But as I know, there is no sample mode ! May be it is possible to derive one, but it seems not obvious for me.
dennis roberts wrote:
problem here is that there is NO agreed to operational definition of the
mode ... and if that is the case, difficult to find a variance around it(them)At 10:06 PM 12/4/00 -0600, Alireza Tahai wrote:
>Hello,
>Would you answer the following two questions,
>1) I know the variance of mean and median. What is the variance of mode?
>2) Under what condition we can say mode is a better estimate of population
>average than mean or median. For example, when the distribution of a
>variable is Gamma, then mean, median or mode which one is a better estimate
>for population average. Thank you in advance. A. Tahai
>
>
>
>
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