---
title: "Calculs simple avec RMarkdown"
subtitle: "MOOC Recherche reproductible | Module 2 | Exercice 02"
author: "Emmanuel D."
date: "14 août 2020"
output: html_document
---


```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

## Données d'analyse
selon la donnée de l'exercice, cf. [site](https://www.fun-mooc.fr/courses/course-v1:inria+41016+self-paced/courseware/66bc811404b8481da5f794de54681c5e/8b8b358fa16b47b2ab2b156ebdd1dc05/)
```{r, echo=FALSE}
rawdata <- c(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)
rawdata
```

## exercice 02-2: simples calculs

Sommaire
```{r}
summary(rawdata)
```

De plus l'écart-type est de `r sd(rawdata)`.  

## exercice 02-3: représentations graphiques
```{r echo=TRUE, message=FALSE, warning=FALSE}
library(ggplot2)
```

### séquence plot
```{r}
ggplot(as.data.frame(rawdata), aes(seq(from = 0, to = length(rawdata)-1), rawdata)) + 
  geom_line() +
  theme(axis.title=element_blank())
```


### histogramme
```{r, fig.asp=1, out.width="60%"}
my_breaks = seq(min(rawdata),max(rawdata),length.out = 11)

ggplot(as.data.frame(rawdata), aes(rawdata)) + geom_histogram(breaks=my_breaks) +
 theme(axis.title=element_blank())

# Alternative avec base
# hist(rawdata,breaks=my_breaks)
```