1. Generate one bar graph for one variable of your choice in the mtcars built-in dataset.

motorcars <- mtcars  
str(motorcars)  
## 'data.frame':    32 obs. of  11 variables:
##  $ mpg : num  21 21 22.8 21.4 18.7 18.1 14.3 24.4 22.8 19.2 ...
##  $ cyl : num  6 6 4 6 8 6 8 4 4 6 ...
##  $ disp: num  160 160 108 258 360 ...
##  $ hp  : num  110 110 93 110 175 105 245 62 95 123 ...
##  $ drat: num  3.9 3.9 3.85 3.08 3.15 2.76 3.21 3.69 3.92 3.92 ...
##  $ wt  : num  2.62 2.88 2.32 3.21 3.44 ...
##  $ qsec: num  16.5 17 18.6 19.4 17 ...
##  $ vs  : num  0 0 1 1 0 1 0 1 1 1 ...
##  $ am  : num  1 1 1 0 0 0 0 0 0 0 ...
##  $ gear: num  4 4 4 3 3 3 3 4 4 4 ...
##  $ carb: num  4 4 1 1 2 1 4 2 2 4 ...
motorcars.fq1 <- table(motorcars$cyl)
motorcars.fq1
## 
##  4  6  8 
## 11  7 14
barplot(motorcars.fq1  ,  
main= "Barplot for 1974 Motor Trend Car Road Cylinder Test" , 
ylab= "Number of Cars"  ,
xlab= "Number of Cylinders" , 
col= "#caf0f8"  ,
border= "#03045e"  ,  
space= 0.5  ,
ylim= c(0,20)  )

##2. Generate one histogram for one variable of your choice in the mtcars built-in dataset.

motorcars.fq2 <- table(motorcars$gear)  
motorcars.fq2   
## 
##  3  4  5 
## 15 12  5
hist(motorcars.fq2  ,
  main= "Histogram of 1974 Motor Trend Car Road Gears Test" ,
  xlab= "Number of Gears"  ,
  ylab= "Number of Cars" , 
  col= "#00b4d8"  ,
  border= "#03045e"  ,  
  ylim= c(0,3)  ,
  labels = T)

##Generate one histogram for one variable of your choice in the mtcars built-in dataset.

motorcars.fq3 <- table(motorcars$carb)  
motorcars.fq3   
## 
##  1  2  3  4  6  8 
##  7 10  3 10  1  1
boxplot(motorcars.fq3,    
main= "Boxplot of 1974 Motor Trend Car Road Carburetors Test"  ,  
ylab= "Number of Carburetors"  ,  
col= "#03045e"  ,    
border= "#03045e"  ,
ylim= c(0,15)  ,
horiz = T)