About the data

palmerpinguins (https://allisonhorst.github.io/palmerpenguins) is an R package to provide a great dataset for data exploration & visualization, as an alternative to iris.

Let’s look into it !

The penguins data contains the following

## Rows: 344
## Columns: 8
## $ species           <fct> Adelie, Adelie, Adelie, Adelie, Adelie, Adelie, Adel~
## $ island            <fct> Torgersen, Torgersen, Torgersen, Torgersen, Torgerse~
## $ bill_length_mm    <dbl> 39.1, 39.5, 40.3, NA, 36.7, 39.3, 38.9, 39.2, 34.1, ~
## $ bill_depth_mm     <dbl> 18.7, 17.4, 18.0, NA, 19.3, 20.6, 17.8, 19.6, 18.1, ~
## $ flipper_length_mm <int> 181, 186, 195, NA, 193, 190, 181, 195, 193, 190, 186~
## $ body_mass_g       <int> 3750, 3800, 3250, NA, 3450, 3650, 3625, 4675, 3475, ~
## $ sex               <fct> male, female, female, NA, female, male, female, male~
## $ year              <int> 2007, 2007, 2007, 2007, 2007, 2007, 2007, 2007, 2007~

How many species ?

We have 3 species into this datasets: Adelie, Gentoo, and Chinstrap that are not equally reparted

species n
Adelie 152
Chinstrap 68
Gentoo 124

Illustration of pinguins species : Chinstrap, Gentoo and Adélia

Interesting Metrics

We can get some interesting mean metrics for each species:

species bill_length_mm bill_depth_mm flipper_length_mm body_mass_g
Adelie 38.79139 18.34636 189.9536 3700.662
Chinstrap 48.83382 18.42059 195.8235 3733.088
Gentoo 47.50488 14.98211 217.1870 5076.016

Illustration about penguins bill length and depth

The Gentoo specie is heavier than other !

Is this equally distributed between Sex ?

And where do they live ?

Horizontal bar chart, faceted by Species showing the number of penguins living on each island, Torgersen, Dream and Biscoe. Adelie lives on the three, whereas Gentoo on Biscoe and Chinstrap on Dream.

One of the species lives on all islands and the others are specific to one island only.

Acknowledgement