potato

In his "Statistical Methods for Research Workers" Fisher (1925) introduced the world to ANOVA using data from the Rothamsted Agricultural Experimental Station. In one example, Fisher compared potato yield (per plant) for twelve potato varieties and three fertilizer treatments (a basal manure application, along with sulfur and chloride addition). 
Three replicates were measured for each of the 12 x 3 = 36 treatment combinations.

datasets

Contains functions from: Aho, K. (2014) Foundational and Applied Statistics for Biologists using R.  CRC/Taylor and Francis, Boca Raton, FL, ISBN: 978-1-4398-7338-0.

Ken Aho

asbio

A Collection of Statistical Tools for Biologists

potato function

A data frame with 108 observations on the following 4 variables.<dl>
 <dt><code>Yield</code></dt>
<dd>Potato yield in lbs per plant</dd> <dt><code>Variety</code></dt>
<dd>Potato variety: <code>Ajax</code> <code>Arran comrade</code> <code>British queen</code> <code>Duke of York</code> <code>Epicure</code> <code>Great Scot</code> <code>Iron duke</code> <code>K of K</code> <code>Kerrs pink</code> <code>Nithsdale</code> <code>Tinwald perfection</code> <code>Up-to-date</code></dd> <dt><code>Fert</code></dt>
<dd>Fertilizer type: <code>B</code> = basal manure, <code>Cl</code> = chloride addition, <code>S</code> = sulfur addition.</dd> <dt><code>Patch</code></dt>
<dd>Feld patch number <code>1</code> <code>2</code> <code>3</code> <code>4</code> <code>5</code> <code>6</code> <code>7</code> <code>8</code> <code>9</code></dd> 
</dl>

Format

Fisher's Rothamsted potato data — potato

A data frame with 108 observations on the following 4 variables.<dl>
 <dt><code>Yield</code></dt>
<dd>Potato yield in lbs per plant</dd>

 <dt><code>Variety</code></dt>
<dd>Potato variety: <code>Ajax</code> <code>Arran comrade</code> <code>British queen</code> <code>Duke of York</code> <code>Epicure</code> <code>Great Scot</code> <code>Iron duke</code> <code>K of K</code> <code>Kerrs pink</code> <code>Nithsdale</code> <code>Tinwald perfection</code> <code>Up-to-date</code></dd>

 <dt><code>Fert</code></dt>
<dd>Fertilizer type: <code>B</code> = basal manure, <code>Cl</code> = chloride addition, <code>S</code> = sulfur addition.</dd>

 <dt><code>Patch</code></dt>
<dd>Feld patch number <code>1</code> <code>2</code> <code>3</code> <code>4</code> <code>5</code> <code>6</code> <code>7</code> <code>8</code> <code>9</code></dd>

 
</dl>

potato: Fisher's Rothamsted potato data

Description

Usage

Arguments

Format