npk

Classical N, P, K Factorial Experiment

A classical N, P, K (nitrogen, phosphate, potassium) factorial experiment on the growth of peas conducted on 6 blocks. Each half of a fractional factorial design confounding the NPK interaction was used on 3 of the plots.

Keywords
datasets
Usage
npk
Format

The npk data frame has 24 rows and 5 columns:

block
which block (label 1 to 6).
N
indicator (0/1) for the application of nitrogen.
P
indicator (0/1) for the application of phosphate.
K
indicator (0/1) for the application of potassium.
yield
Yield of peas, in pounds/plot (the plots were (1/70) acre).

Source

Imperial College, London, M.Sc. exercise sheet.

References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

Aliases
  • npk
Documentation reproduced from package datasets, version 3.1.2, License: Part of R 3.1.2

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