Module R’Stat1 : Statistiques descriptives

Novembre 2019 ; IRD-Montpellier-France

CC BY-NC-ND 3.0

Manipulation des données, statistiques descriptives et graphiques

Stats descr.

Statistique descriptive : résumer l’information avec caractéristiques essentielles.

Comment ? Avec des indicateurs et des représentations graphiques.

Stats descr.

##   year month day hour minute second temperature      gas humidity pressure
## 1 2018    10  22   17     58      1    10.75793 11811196 80.34636 1040.177
## 2 2018    10  22   17     59     26    10.76887 11682953 79.98910 1040.153
## 3 2018    10  22   18      0     29    10.80402 11569892 79.74389 1040.090
## 4 2018    10  22   18      1     31    10.78391 11582347 79.84094 1040.164
## 5 2018    10  22   18      2     33    10.73586 11582347 80.57278 1040.286
## 6 2018    10  22   18      3     36    10.66633 11582347 81.02920 1040.477
##   lightVisible lightIR lightUV
## 1          264     318       4
## 2          266     313       5
## 3          263     306       3
## 4          267     307       4
## 5          266     308       5
## 6          266     307       5

Stats descr.

## [1] 465540
## [1] 13

Stats descr.

## [1] 11.12679
## [1] 9.93
## [1] -5.986406
## [1] 49.01672

Stats descr.

## [1] 73.94156
## [1] 73.94156
## [1] 8.598928
## [1] 8.598928

Stats descr.

##        0%       25%       50%       75%      100% 
## -5.986406  4.618672  9.930000 16.842305 49.016719
##  50% 
## 9.93

Stats descr.

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##  -5.986   4.619   9.930  11.127  16.842  49.017

Stats descr.

##   temperature        humidity         pressure     
##  Min.   :-5.986   Min.   : 15.27   Min.   : 980.6  
##  1st Qu.: 4.619   1st Qu.: 54.70   1st Qu.:1011.2  
##  Median : 9.930   Median : 74.09   Median :1025.5  
##  Mean   :11.127   Mean   : 69.41   Mean   :1027.4  
##  3rd Qu.:16.842   3rd Qu.: 85.23   3rd Qu.:1041.5  
##  Max.   :49.017   Max.   :100.00   Max.   :1085.6

Stats descr.

##   temperature        humidity         pressure     
##  Min.   :-5.986   Min.   : 15.27   Min.   : 980.6  
##  1st Qu.: 4.619   1st Qu.: 54.70   1st Qu.:1011.2  
##  Median : 9.930   Median : 74.09   Median :1025.5  
##  Mean   :11.127   Mean   : 69.41   Mean   :1027.4  
##  3rd Qu.:16.842   3rd Qu.: 85.23   3rd Qu.:1041.5  
##  Max.   :49.017   Max.   :100.00   Max.   :1085.6

Stats descr.

moyennes par mois ?

## [1] "2018-10-22 17:58:01 CEST" "2018-10-22 17:59:26 CEST"
## [3] "2018-10-22 18:00:29 CEST" "2018-10-22 18:01:31 CEST"
## [5] "2018-10-22 18:02:33 CEST" "2018-10-22 18:03:36 CEST"

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