rpruim/mosaic — Issue #28: polish aggregating statistic functions
Author: rpruim
Created: 2012-02-04 19:18:03+00:00
State: open

We still have that annoying "S" in

```R
mean(age~sex, HELPrct)
sex S N Missing
1 female 36.25234 107 0
2 male 35.46821 346 0
```
The following disagree about whether things should be named.

```R
mean(age, data=HELPrct)
[1] 35.65342
mean(~age, data=HELPrct)
mean
35.65342
```