Measures of dispersion

• Range or Variation
• Variance
• Standard deviation

1) Range or variation :

• Range is the difference between the smallest and highest value.
• R Function : range()

2) Variance :

• Variance is the measure of how far is data vary from the average value.
• R Function : var()

3) Standard Deviation :

• Standard deviation is the square root of the variance.
• R Function : sd()

#Measure of Dispersion

#Read File
print(getwd())
setwd(“/home/sof#Measure of Dispersion

#Read File
print(getwd())
setwd(“/home/soft13″)
print(getwd())
data<-read.csv(‘input.csv’)
print(data)
print(is.data.frame(data))

#Range
range(data$salary)

#Variance
var(data$salary)

#Standard Deviation
sd(data$salat13”)
print(getwd())
data<-read.csv(‘input.csv’)
print(data)
print(is.data.frame(data))

#Range
range(data$salary)

#Variance
var(data$salary)

#Standard Deviation
sd(data$salary)