Collect and Comment on the variability of three recent data

Collect and Comment on the variability of three recent data sets describing similar processes (could be prices of three items over the last month, demographic information related to 3 countries over last year, etc.). Plot the probability mass function (PMF) and the cumulative distribution function (CDf) of 3 landom variables following (1) binomial distribution [p,n], (2) a geometric distribution fpj, and (3) Poisson distribution (A). You have to consider two sets of parameters per distribution which can be chosen arbitrarily. The following steps can be followed: Setpl: Establish two sets of parameters of the distribution: For Geometric and Poisson distributions take two values of p (pi and p2) and take two values of [lambda], (lambda_1 and lambda_2) respectively. For the binomial you should take two values of p and two values of n, first keep p fixed and change n, in the second keep n fixed and change p. Step 2: Generate the random variables (at least 10 values) [column 1] Step 3: Calculate the PMF (column 21 and COF (column 3) Comment on how the parameter values affect the distribution.

Solution

1) we will give the data of sales of different mobile phones in different months in US

iphone S6 Htc

jan 3000 1745 1156

feb 4506 1500 1100

march 4786 1673 1180

april 4989 1656 1056

may 5134 1387 876

june 5487 1248 960

this represent the 3 different phones and its 6 in the 6 monthss of the year

the variablity can be understood by analysing the sales

like iphone sales is increasing by much margin in every month

where as the sales of other two phones is not fixed and we cannot predict the nature of the sales in other two phone

where as in iphone case it clearly depict the likeness among people and we can also predict the in next month also it will increase only.