Arithmetic Mean
Mean of grouped data objects.
## S3 method for class 'grouped.data' mean(x, ...)
x |
an object of class |
... |
further arguments passed to or from other methods. |
The mean of grouped data with group boundaries c[1], …, c[r] and group frequencies n[1], …, n[r] is
sum(j; (c[j - 1] + c[j])/2 * n[j]).
A named vector of means.
Vincent Goulet vincent.goulet@act.ulaval.ca
Klugman, S. A., Panjer, H. H. and Willmot, G. E. (1998), Loss Models, From Data to Decisions, Wiley.
grouped.data to create grouped data objects;
emm to compute higher moments.
data(gdental) mean(gdental)
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