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
Maurice Allais (1988 Nobel Laureate in Economics) once said something to
the effect that economics can never be a science because it involves
self-interest. *
* It has been said that Euclid's theorem would have been bitterly
contested had its implications brought financial or political
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