[R] Biologist R learner problem!!!help pls

[Berend Hasselman]

On 19-11-2012, at 15:48, Anna23 wrote:

> . Q>>>Use the built in dataset called iris in this task.
> (a) Calculate the result of following formula separately in every species
> for all of the
> numerical variables: log(x)/x.
> (b) Calculate trimmed mean for each of the numerical variables using
> apply–function. Choose
> your own trimming percentage
> 

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Berend