#+TITLE: Mes premières statistiques /illustrées/
#+LANGUAGE: fr
# #+PROPERTY: header-args :eval never-export

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* Définitions et premiers calculs

Import de numpy et création de l'ensemble de donnée :

#+begin_src python :results output :session :exports both
import numpy as np
data = [14.0, 7.6, 11.2, 12.8, 12.5, 9.9, 14.9, 9.4, 16.9, 
        10.2, 14.9, 18.1, 7.3, 9.8, 10.9,12.2, 9.9, 2.9, 2.8, 
        15.4, 15.7, 9.7, 13.1, 13.2, 12.3, 11.7, 16.0, 12.4, 
        17.9, 12.2, 16.2, 18.7, 8.9, 11.9, 12.1, 14.6, 12.1, 
        4.7, 3.9, 16.9, 16.8, 11.3, 14.4, 15.7, 14.0, 13.6, 
        18.0, 13.6, 19.9, 13.7, 17.0, 20.5, 9.9, 12.5, 13.2, 
        16.1, 13.5, 6.3, 6.4, 17.6, 19.1, 12.8, 15.5, 16.3, 
        15.2, 14.6, 19.1, 14.4, 21.4, 15.1, 19.6, 21.7, 11.3, 
        15.0, 14.3, 16.8, 14.0, 6.8, 8.2, 19.9, 20.4, 14.6, 
        16.4, 18.7, 16.8, 15.8, 20.4, 15.8, 22.4, 16.2, 20.3, 
        23.4, 12.1, 15.5, 15.4, 18.4, 15.7, 10.2, 8.9, 21.0]
#+end_src

#+RESULTS:

Calcul de la moyenne :

#+begin_src python :results output :session :exports both
np.average(data)
#+end_src

#+RESULTS:
: 14.113000000000001

Calcul de l'écart-type :

#+begin_src python :results output :session :exports both
np.std(data, ddof=1)
#+end_src

#+RESULTS:
: 4.334094455301447

Calcul de la médianne :

#+begin_src python :results output :session :exports both
np.median(data)
#+end_src

#+RESULTS:
: 14.5

Min/Max :

#+begin_src python :results output :session :exports both
print(str(min(data)) + " < data < " + str(max(data)))
#+end_src

#+RESULTS:
: 2.8 < data < 23.4

#+RESULTS:
[[file:Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/tmp/babel-ffkqp5/python-bW833W", line 4, in <module>
    x=np.linspace(0,len(data))
NameError: name 'np' is not defined]]

* Affichage des données

** Séquence plot

#+begin_src python :results output file :session :var matplot_lib_filename="sequence.png" :exports both
import matplotlib.pyplot as plt

x=[i for i in range(len(data))]
plt.figure(figsize=(5,5))
plt.grid()
plt.plot(x,data)
plt.tight_layout()

plt.savefig(matplot_lib_filename)
print(matplot_lib_filename)
#+end_src

#+RESULTS:
[[file:sequence.png]]

** Histogramme

#+begin_src python :results output file :session :var matplot_lib_filename="histo.png" :exports both
plt.figure(figsize=(5,5))
plt.grid()
plt.hist(data)
plt.tight_layout()

plt.savefig(matplot_lib_filename)
print(matplot_lib_filename)
#+end_src

#+RESULTS:
[[file:histo.png]]