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.

datasets

R-core R-core@R-project.org

The R Datasets Package

npk function

The <code>npk</code> data frame has 24 rows and 5 columns:
  <dl class="dl-horizontal">
    <dt><code>block</code></dt><dd>
      which block (label 1 to 6).
    </dd>
    <dt><code>N</code></dt><dd>
      indicator (0/1) for the application of nitrogen.
    </dd>
    <dt><code>P</code></dt><dd>
      indicator (0/1) for the application of phosphate.
    </dd>
    <dt><code>K</code></dt><dd>
      indicator (0/1) for the application of potassium.
    </dd>
    <dt><code>yield</code></dt><dd>
      Yield of peas, in pounds/plot (the plots were (1/70) acre).
    </dd>
  </dl>

Format


 — npk

The <code>npk</code> data frame has 24 rows and 5 columns:
  <dl class='dl-horizontal'>
    <dt><code>block</code></dt><dd>
      which block (label 1 to 6).
    </dd>
    <dt><code>N</code></dt><dd>
      indicator (0/1) for the application of nitrogen.
    </dd>
    <dt><code>P</code></dt><dd>
      indicator (0/1) for the application of phosphate.
    </dd>
    <dt><code>K</code></dt><dd>
      indicator (0/1) for the application of potassium.
    </dd>
    <dt><code>yield</code></dt><dd>
      Yield of peas, in pounds/plot (the plots were (1/70) acre).
    </dd>
  </dl>

npk:

Description

Usage

Arguments

Format

References