Understanding data Understanding data Presenting data Stem and Leaf plot The stem and leaf plot is a simple plot which separates the data entries into leading digits or stems and trailing digits or leaves. The plot basically shows how the values distribute and cluster over the range of the observations in the data set. In R there is a function called stem which is very suitable to display this data. It takes in 4 arguments out of which the first 2 are the most important. The first argument is an ordered vector of a variable and the second argument controls the height of the plot. library(xlsx) ## Warning: package 'xlsx' was built under R version 3.2.3 ## Loading required package: rJava ## Warning: package 'rJava' was built under R version 3.2.3 ## Loading required package: xlsxjars ## Warning: package 'xlsxjars' was built under R version 3.2.3 mf_return <- read.xlsx(file = "./data/Mutual Funds.xls...
