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data.set=c(16189,5659,140,899,1021,427)
data.set2=c("Automobile","Plane","Train","Bus","Boat","Other Methods")
Method=c("Automobile","Plane","Train", "Bus", "Boat", "Other Methods")
Frequency=c(16189,5659,140,899,1021,427)
barplot(Frequency,names.arg =Method,ylim=c(0,20000),xlab= 'Method of Transit',ylab='US Residents Entered (in thousands)',col=rainbow(6), main='1a)Nagir') 

data.set=c(16189,5659,140,899,1021,427)
data.set2=c("Automobile","Plane","Train","Bus","Boat","Other Methods")
pie(data.set,data.set2,col=rainbow(6),main="Nagir")

C) The bar chart is unimodal and is a right skewed distribution. Both the bar chart and pie chart show that automobiles are the most popular method of transportation.However, the pie chart is not an appropriate display of this information because it is difficult to distinguish between some of the different categories such as bus and boat.

data.set=c(16.7,11.0,8.9,5.8,5.1,4.2,3.9,3.9,3.4,2.7,13.1,10.8,8.5,5.5,5.0,4.0,3.9,3.5,2.9,2.5)
classes=c(0,2,4,6,8,10,12,14,16,18)
hist(data.set,breaks=10,right=TRUE,xlab="classes",ylab="percent",ylim=c(0,10), col=rainbow(6), main="2a)Nagir") 

data.set2=c(16.7,11.0,8.9,5.8,5.1,4.2,3.9,3.9,3.4,2.7,13.1,10.8,8.5,5.5,5.0,4.0,3.9,3.5,2.9,2.5)
stem(data.set2,scale=3)
##
##   The decimal point is at the |
##
##    2 | 579
##    3 | 45999
##    4 | 02
##    5 | 0158
##    6 |
##    7 |
##    8 | 59
##    9 |
##   10 | 8
##   11 | 0
##   12 |
##   13 | 1
##   14 |
##   15 |
##   16 | 7
1. The distribution representing the unemployment rates among the 19 countries and the European Union has a single hump and is a right skewed distribution which is centered around 2-5.