R STUDIO The R file will consist of all the code and should be executable (you s

Question

R STUDIO

The R file will consist of all the code and should be executable (you should use R script).

Copy your R script into a word document, submit both R, and word (doc/docx) files.

All the answers, other than the actual codes, are to be noted as comments

Name the file “LastName_Assignment1” with appropriate file extension (.doc and .R)

Your script should follow the format below:

#1 Basic operations, assignments

#a

x <- 4

y <- 5

z <- x+y

z

#output: 9

#b

x <- 1

y <- 5

z <- x+y

z

Question:Matrices

a. Provide the code to create matrix X

X=

b. Provide the code to assign the value 2 for all the elements in the matrix that are less than 5

c. Assign the values in 2nd and 3rd column to the new matrix Y

d. Assign row names of X as R1, R2, R3

e. Assign column names of X as C1 to C3

f. Add a new row named R4 with the following values of 3, 6, 9

g. Add a new column named C4 with the following values of 1,3,5,7

h. Assign 0s for all elements of the second column C2

i. Print the final X matrix

Explanation / Answer

x <- matrix(2:10, nrow = 3, ncol = 3)
x

// assign the value 2 for all the elements in the matrix that are less than 5

x[x<5] <- 2
x

//Assign row names of X as R1, R2, R3

rownames(x)[3] <- "R3"
rownames(x)[2] <- "R2"
rownames(x)[1] <- "R1"
x

//Assign column names of X as C1 to C3

colnames(x)[3] <- "C3"
colnames(x)[2] <- "C2"
colnames(x)[1] <- "C1"
x

//Add a new row named R4 with the following values of 3, 6, 9

x <- rbind(x,c(3,6,9))
rownames(x)[4] <- "R4"

x

//Add a new column named C4 with the following values of 1,3,5,7

x <- cbind(x,c(1, 3, 5, 7))
colnames(x)[4] <- "C4"
x

// Assign 0s for all elements of the second column C2

x[,2] <- 0

x

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