Calculating common measure of variability, skewness, and percentiles on R

How do you calculate the range on R

1. type in the data

   • e.g. dataname<-c(4,6,9,3,7)

2. find the range

   • range_of_data(choose a name) <- max(data name)-min(data name)

how do you calculate the upper and lower quartile on R

1. type in the data

   • dataname<-c()

2. find quartiles

   • quantiles_of_dataname(choose a name)<-quantile(data name, type=6)

how do you calculate the IQR on R

1. type in the data

   • dataname<-c()

2. IQR_of_data (choose a name)<-IQR(data name, type=6)

how do you calculate the standard deviation on R

1. type in the data

   • dataname<-c()

2. sd_dataname (choose a name) <-sd(data name)

how do you calculate the variance on R

1. type in the data

   • dataname<-c()

2. variance_dataname<-var(dataname)

how do you install the skewness statistic package in R

install.packages(“e1071”)

how to calculate the skewness statistic in R

1. need to tell we need to use package ,

   require(“e1071”)

2. chosen name <-skewness (data name)

how to calculate percentiles on R e.g. 65th percentile

1. type in the data

   • dataname<-c()

2. chosen name <- quantile(data name, 0.65, type=6)