Jan 03 2019

7:30 PM Batch

Basic Stats

# Jan 03 2019
x <- read.csv("C:\\Users\\Admin\\Desktop\\SARLAKG\\mba.csv")


dim(x)

## [1] 773   3

colnames(x)

## [1] "data.srno" "workex"    "gmat"

head(x,3)

##   data.srno workex gmat
## 1         1     21  720
## 2         2    107  640
## 3         3     57  740

tail(x)

##     data.srno workex gmat
## 768       768     38  680
## 769       769     88  620
## 770       770    132  670
## 771       771     28  610
## 772       772     10  610
## 773       773     52  620

#x[,1]

attach(x)
#detach(x)

mean(gmat)

## [1] 711.1643

median(gmat)

## [1] 710

sd(gmat)

## [1] 29.33971

var(gmat)

## [1] 860.8188

range <- max(gmat)- min(gmat)
range

## [1] 180

#install.packages('car')
library(e1071)

## Warning: package 'e1071' was built under R version 3.4.4

skewness(gmat)

## [1] -0.5931675

kurtosis(data.srno)

## [1] -1.204658

hist(gmat)

barplot(gmat)

boxplot(gmat)