Statistics and Probability Lesson 2

To solve for the variance of a discrete random variable, the value of mean is not necessary.

Find the average of y = {2,1,0,2).

Find the summation of y = {2,1,0,2}.

Find the average of x = {4,2,5,1}.

What is the sum of all the individual probabilities in discrete probability distribution?

Find the sum of (x\cdoty) if x = {4,2,5,1} and y = {2,1,0,2}.

What is the random variable obtained from a counting process?

What is the numerical description of the outcome of a statistical experiment?

A table gives a list of probability values along with their associated value in the range of a discrete random variable.

The first step in computing the mean of discrete probability distribution is construct a probability distribution table.

In computing the mean using alternative solution, there's no need to add another column in the given table.

The sum of individual probabilities of discrete probability distribution can be greater than 1.

Find the summation of x = {4,2,5,1}.