I'd hazard a guess that data.linear$Weight may have a "Not
Available"
data point (ie. missing data).
> f <- c(NA,rnorm(10))
> mode(f)
[1] "numeric"> mean(f)
[1] NA
If you'd like to compute the mean anyway, you can
use> mean(f,na.rm=TRUE)
[1] 0.3433036
On 7/9/06, justin rapp <jdrapp at gmail.com>
wrote:> I have a vector containing players' weights. When I enter
>
>
> mode(data.linear$Weight)
> "numeric" is returned.
>
>
> When I type mean(data.linear$Weight)
>
> NA is returned.
>
> Any ideas as to why this may be the case? I am trying to calculate
> this ultimately so I can superimpose a normal density line over a
> histogram containing the weights?
>
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--
Regards,
Mike Nielsen