Maize Data

Data from and experiment with five maize families carried out in randomized block design, with four replications (environments).

data("maize")

Format

A data frame with 20 observations on the following 6 variables.

NKPR

a numeric vector containing values of Number of Kernels Per cob Row.

ED

a numeric vector containing values of Ear Diameter (in cm).

CD

a numeric vector containing values of Cob Diameter (in cm).

PH

a numeric vector containing values of Plant Heigth (in m).

family

a factor with levels 1 2 3 4 5

env

a factor with levels 1 2 3 4

Examples

data(maize)
str(maize)
#> 'data.frame':	20 obs. of  6 variables:
#>  $ NKPR  : num  36 34.2 28.1 30.7 34 ...
#>  $ ED    : num  4.33 4.04 3.74 4.32 4.66 ...
#>  $ CD    : num  2.32 2.25 2.14 2.29 2.5 ...
#>  $ PH    : num  2.09 1.89 2.12 2.08 2.1 ...
#>  $ family: Factor w/ 5 levels "1","2","3","4",..: 1 2 3 4 5 1 2 3 4 5 ...
#>  $ env   : Factor w/ 4 levels "1","2","3","4": 1 1 1 1 1 2 2 2 2 2 ...
summary(maize)
#>       NKPR             ED              CD              PH        family env  
#>  Min.   :26.01   Min.   :3.471   Min.   :2.064   Min.   :1.600   1:4    1:5  
#>  1st Qu.:30.50   1st Qu.:3.870   1st Qu.:2.240   1st Qu.:1.888   2:4    2:5  
#>  Median :32.93   Median :4.287   Median :2.321   Median :1.994   3:4    3:5  
#>  Mean   :32.63   Mean   :4.142   Mean   :2.322   Mean   :1.973   4:4    4:5  
#>  3rd Qu.:35.53   3rd Qu.:4.342   3rd Qu.:2.410   3rd Qu.:2.086   5:4         
#>  Max.   :36.50   Max.   :4.660   Max.   :2.585   Max.   :2.305