[R] Calculates the mean/median from grouped data in R?

[Nuri Jazairi]

see if this helps:

library(actuar)
data(gdental)    # grouped data
quantile(gdental)
mean(gdental)

Nuri

On Wed, 8 May 2013, jpm miao wrote:

> Is there a function in R that calculate the mean and median for a grouped
> data?
> For example, a survey shows the oil price outlook in the future. How can I
> calculate the mean/median?
> (Of course, I understand that the groups "below 80" and "above 110" must be
> defined more specifically)
>
>  below 80 4  80-90 5  90-100 8  100-110 7  above 110 3
>
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