Business App IT Lab - Session 2

Assignment 1

To bind columns/rows from 2 different matrices into a new matrix

Solution

As indicated in the screenshot below

Assignment 2

Multiply two matrices

Solution

As indicated in the below screenshot

Assignment 3

To read NSE historical data dated from 1st Dec, 2012 to 31st Dec, 2012 from a .csv file.

To find regression between the High Price and the opening share price and also calculating the 

residuals.

Solution

Commands as indicated in the below screenshot

Residuals

 Plot

Assignment 4

To generate data for a normal distribution and plot the distribution curve

Solution

To generate normally distributed random numbers function used is -:

rnorm(N, mean,sd)

where N is the no of observations

mean is the mean vector

sd - standard deviation

As shown below

Plot is as follows

> plot(values,pden)