What is the meaning of "out" object for box plot in R?

0
votes

Suppose this is my data set:

ID<- seq(1:50)
mou<-sample(c(2000, 2500, 440, 4990, 23000, 450, 3412, 4958,745,1000), 50, replace= TRUE)
calls<-sample(c(50, 51, 12, 60, 90, 888, 444, 668, 16, 89, 222,33, 243, 239, 333, 645,23, 50,555), 50, replace= TRUE)
rev<- sample(c(100, 345, 758, 44, 58, 334, 50000, 888, 205, 940,298, 754), 50, replace= TRUE)
dt<- data.frame(mou, calls, rev)

I did the box plot for calls and while analyzing it, I saw the following objects for the boxplot.

x<-boxplot(dt$calls)
names(x)
> names(x)
[1] "stats" "n"     "conf"  "out"   "group" "names"

Looking at the output for x$stats, I figured that stats object gives me the lower whisker the lower hinge, the median, the the upper hinge and the upper whisker for each group. But i am little bit confused what the object "out" really mean? Does this signify the outlier values or something else? The out object for my boxplot gives the following results:

> x$out
[1]   555 10000   555   555   555   555   555 10000
2
rboxplotoutliers
Consider asking this kind of question at other communities like Data Science or Cross Validated. – M--

2 Answers

0
votes

It gives you: "The values of any data points which lie beyond the extremes of the whiskers"

Take a look at here for more insight.

0
votes

x<-boxplot(dt$calls) .

It(x$out) gives you Outlier Values. Remove them and create a new column to get Perfect Data.

Ex:

outliers_values=x$out

new_data=data[!(data %in% outliers_values)]