Calculate the variance of x

Assignment Help Basic Statistics

Reference no: EM131416185

A random variable X has the following probability distribution:

X	-2	0	2
Probability	.25	.50	.25

a. Calculate the mean of X.

b. Calculate the variance of X.

c. Calculate the standard deviation of X.

Reference no: EM131416185

Questions Cloud

How would you define a fair game : How would you define a fair game? Does the number of times the game is played affect your view of whether the game is fair or not? Explain.

What assumptions do economists make : What assumptions do economists make? Why does each assumption matter in environmental economics? Is the environment an economic asset? Is the environment a social asset? Explain.

Find the expected value for the sum of two fair dice : Find the expected value for the sum of two fair dice. The probability distribution function was found in given Example.

Develop a coherently structured paper : Revise, using feedback from the professor and classmates, your Persuasive Paper Part I: A Problem Exists - Develop Part 2: Solution to Problem and Advantages (3-4 pages for 6-8 pages total)

Calculate the variance of x : A random variable X has the following probability distribution:- Calculate the mean of X.- b. Calculate the variance of X.

Evaluate the position espoused in the above statement : This diversity of experience reinforces the view that economic policies and policy advice must be country specific if they are to be effective". Critically evaluate the position espoused in the above statement.

Evaluate your classmates'' decisions based on their strengths : Constructively evaluate your classmates' decisions based on their strengths and weaknesses. Share any careers that you have come across that your classmates may be interested in based on their strengths and weaknesses.

Predominant characteristics of the gulf rentier states : What are the predominant characteristics of the Gulf Rentier States? Explain how a "Triple Alliance" of the society's more dominant forces retard democratic reforms and progress in oil rich states?

Instrument of empowerment for membership : Outline the historic emergence of OPEC as "a cartel that took on the old cartel." Describe how this organisation, once dubbed a paper tiger, eventually emerged as an instrument of empowerment for its membershipinstrument of empowerment for its membe..

User Account

All Pages