# Analysis of the Datos data, using Duracion as the response variable and Especie as the single grouping factor.

## Group summaries

``````The following objects are masked _by_ .GlobalEnv:

duracion, especie
``````
Level Mean Standard deviation n Standard error
Towee 1.0925 0.1363556 8 0.04820899
Cuelliamarillo 1.8825 0.1921123 8 0.06792196
Malviz 0.6050 0.1933908 8 0.06837397

The ratio of the largest group standard deviation to the smallest is 1.42

## Comparative boxplots

`````` This graph has 3 boxplots printed vertically
with the title:
"" appears on the x-axis.
"" appears on the y-axis.
Tick marks for the y-axis are at: 0.5, 1, 1.5, and 2
Group Towee has 8 values.
There are no outliers marked for this group
The whiskers extend to 0.91 and 1.29 from the ends of the box,
which are at 0.97 and 1.205
The median, 1.095 is 53 % from the lower end of the box to the upper end.
The upper whisker is 1.42 times the length of the lower whisker.
Group Cuelliamarillo has 8 values.
There are no outliers marked for this group
The whiskers extend to 1.54 and 2.17 from the ends of the box,
which are at 1.795 and 2.015
The median, 1.865 is 32 % from the lower end of the box to the upper end.
The upper whisker is 0.61 times the length of the lower whisker.
Group Malviz has 8 values.
There are no outliers marked for this group
The whiskers extend to 0.37 and 0.93 from the ends of the box,
which are at 0.45 and 0.73
The median, 0.59 is 50 % from the lower end of the box to the upper end.
The upper whisker is 2.5 times the length of the lower whisker.
``````

## Comparative dotplots

``````Warning in dotplot.formula(duracion ~ especie, xlab = "Duracion", ylab =
"Especie"): The dotplot command is a wrapper for stripchart, and is not a base R
function.
``````

``````This graph has 24 dotplots printed horizontally
with the title:
"" appears on the x-axis.
"" appears on the y-axis.
Tick marks for the x-axis are at: 0.5, 1, 1.5, and 2
the data that range from 0.37 to 2.17 has been broken into 6 bins.
The counts are:
Towee: 0 1 0 0 0 0
Cuelliamarillo: 0 0 0 1 0 0
Malviz: 1 0 0 0 0 0
NA: 0 1 0 0 0 0
NA: 0 0 0 0 1 0
NA: 1 0 0 0 0 0
NA: 0 0 1 0 0 0
NA: 0 0 0 0 1 0
NA: 1 0 0 0 0 0
NA: 0 0 1 0 0 0
NA: 0 0 0 0 1 0
NA: 1 0 0 0 0 0
NA: 0 0 1 0 0 0
NA: 0 0 0 0 1 0
NA: 0 1 0 0 0 0
NA: 0 0 1 0 0 0
NA: 0 0 0 0 0 1
NA: 0 1 0 0 0 0
NA: 0 0 1 0 0 0
NA: 0 0 0 0 0 1
NA: 0 1 0 0 0 0
NA: 0 0 0 1 0 0
NA: 0 0 0 0 0 1
NA: 0 1 0 0 0 0
``````

## One-way Analysis of Variance

``````
The p value for especie is 0

The ratios of the group standard deviations to the overall standard deviation
(groups ordered by increasing mean) are:
0.77 1.09 1.1

``````
``````            Df Sum Sq Mean Sq F value   Pr(>F)
especie      2   6.65   3.325   107.4 9.39e-12 ***
Residuals   21   0.65   0.031
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
``````

## Tests for homogeneity of Variance

``````
Bartlett test of homogeneity of variances

data:  duracion by especie
Bartlett's K-squared = 0.9602, df = 2, p-value = 0.6187
``````
``````
Fligner-Killeen test of homogeneity of variances

data:  duracion by especie
Fligner-Killeen:med chi-squared = 0.85016, df = 2, p-value = 0.6537
``````

## Tukey Honestly Significant Difference test

``````For term especie the comparisons which are significant at 5% are:
Towee and Malviz with a difference of 0.49 and P-value of 0
Cuelliamarillo and Malviz with a difference of 1.28 and P-value of 0
Cuelliamarillo and Towee with a difference of 0.79 and P-value of 0
``````
``````  Tukey multiple comparisons of means
95% family-wise confidence level
factor levels have been ordered

Fit: aov(formula = duracion ~ especie, data = Datos)

\$especie