sludge {datana} | R Documentation |
Sludge data are at different cities, with a value of concentration zinc.
Description
Dataset contains 36 observations
Usage
data(sludge)
Format
Contains four variables, as follows:
- city
Name of city.
- rate
Concentration rate of sludge.
- zinc
Value of concentration ( in ppm).
- trt.comb
Combination between city and rate factors.
Source
The data were provided from.. still remember.
References
not yet
Examples
data(sludge2)
table(sludge$city,sludge$rate)
levels(sludge$city)
tapply(sludge$zinc, list(sludge$city,sludge$rate), mean)
[Package datana version 1.1.1 Index]