IT Lab Session 3

Q1A)

Since the shape of the residual curve is parabola and not random, residual regression does not follow linearity

Q1B)

Since the shape of the residual curve is random, residual regression follow linearity

Q2)

 P value is 0,687. So we do not have sufficient evidance to reject that the comfort levels of the three chairs are similar

IT Lab Session 2

1) Create matrices, select some columns and use cbind to create new matrix

2) Multiply two matrices

3) Generate regression data from 01 Dec 2012 to 31 De 2012 NSE data

4) Generate Normal distribution data and plot it

 plot(sort(x), dnorm(sort(x),5,2))

IT Lab Session 1

Question 0) Draw a line

Answer) 

             x<-c(1,2,3)

             plot(x,type="l")

Question 1) Draw a histogram

Answer)

             x<-c(1,2,3)

             plot(x,type='h')

Question 2) Plot both line and points with graph and axes names

Answer)

             plot(zcoll, type="b", main="NSE", xlab="Time", ylab="Value")

Question 3) Plot a scatter graph

Answer)

              plot(zcoll1,zcoll,main="NSE",xlab="High",ylab="Low")

Question 4) Get maximum from "Max" column and minimum from "Min" column

Answer)