ITLab: Session2

Assignment 1: 

To create a matrix:

x <- c[1:9]

dim(x) <- c(3,3)

y <- c[10:18]

dim(y) <- c(3,3)

To select a column

z1 <- x[ ,3]

z2 <- y[ ,2]

z3<- cbind(z1,z2)

Output:

Assignment 2:

Multiplication of the matrices.

z <- x %*% y

Output:

Assignment 3:

nse <- read.csv(file.choose(),header=T)

For finding the regression and residuals:

reg <- lm(High ~ Open , data = nse)

residuals(reg)

Output:

Assignment 4:

Generating a normal distribution data & plotting it.

x<-rnorm(40,0,1)

y<-dnorm(x)

plot(x,y)

Output: