Stem and Leaf Plot

First, import the data into R. We will import Table 14 from Section 2.3. Use the head command to view the first five lines of data.

Table14 <- read.csv("https://sullystats.github.io/Statistics6e/Data/Chapter2/Table14.csv")
head(Table14,n=5)

##   Poverty
## 1    16.9
## 2    11.1
## 3    14.9
## 4    16.4
## 5    13.3

Use the syntax

stem(data_file/$Variable*,scale = )

stem(Table14$Poverty,scale=2)

## 
##   The decimal point is at the |
## 
##    7 | 7
##    8 | 
##    9 | 35567
##   10 | 0335678
##   11 | 01133369
##   12 | 5568
##   13 | 0023456
##   14 | 00127799
##   15 | 048
##   16 | 469
##   17 | 2
##   18 | 
##   19 | 1778

Now, let’s draw a stem-and-leaf plot using “scale = 3”.

stem(Table14$Poverty,scale=3)

## 
##   The decimal point is at the |
## 
##    7 | 7
##    8 | 
##    8 | 
##    9 | 3
##    9 | 5567
##   10 | 033
##   10 | 5678
##   11 | 011333
##   11 | 69
##   12 | 
##   12 | 5568
##   13 | 00234
##   13 | 56
##   14 | 0012
##   14 | 7799
##   15 | 04
##   15 | 8
##   16 | 4
##   16 | 69
##   17 | 2
##   17 | 
##   18 | 
##   18 | 
##   19 | 1
##   19 | 778