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##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

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What this document contains

This is Practice Assignment 1.

The document will display the different operations assigned as part of this Assignment.

Assignment 1.a Simple Arithmetic Operations

The following operations have been done - addition, subtraction, multiplication, division, raising number to 4th power, 3rd root of a number and log to base 10 of a number respectively

55 + 44 + 7
## [1] 106
674 - 532
## [1] 142
106 * 142
## [1] 15052
106 / 142
## [1] 0.7464789
2^4
## [1] 16
64^(1/3)
## [1] 4
log10(1000)
## [1] 3

Assignment 1.b,c,d Vectors

Creating a vector of 6 numbers, printing the 3rd element as well as the length of the vector.

c <- c(2, 4, 6, 5, 7, 1) 
c
## [1] 2 4 6 5 7 1
c[3]
## [1] 6

Assignment 1.e,f,g Matrices

Creating a Matrix d and performing some operations on the Matrix

d <- matrix(
  c(1,3,5,7,2,4,6,8),  
  nrow=2, 
  ncol=4, 
  byrow=TRUE) 
d 
##      [,1] [,2] [,3] [,4]
## [1,]    1    3    5    7
## [2,]    2    4    6    8
F <- d[,]+5 
F 
##      [,1] [,2] [,3] [,4]
## [1,]    6    8   10   12
## [2,]    7    9   11   13
dim(F) 
## [1] 2 4

Assignment 1.h,i Assigning and Determining Data Types

k <- 5.25 
m <- "frank" 
class(k) 
## [1] "numeric"
class(m) 
## [1] "character"

Assignment 1.j Converting numeral to integer

k <- 5.25 
k <- as.integer(k) 
class(k)
## [1] "integer"
p <- k 
p
## [1] 5

Assignment 1.k Converting integer to character

k <- as.character(k) 
G <- k

Since G is now a character, we cannot add 5.1 to G. The file won’t publish.

Assignment complete