Question: What is the difference between: Variance= E(X^2)-(E(X))^2 Variance = PXi(Xi-E(X))^2 When shall we use the first one when the second one?

What is the difference between:

Variance= E(X^2)-(E(X))^2

Variance = PXi(Xi-E(X))^2

When shall we use the first one when the second one?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

854 CHAPTER 15 DIFFERENTIATION IN SEVERAL VARIABLES 9. 20. Jessica and I at 2 oh ; h (x , y ) = -, x = 1/2, y = 1712 paths that make a with velocity va 10. "J : f ( x , y , Z ) = xy - 22, x = rcos0,...

Q:

Developments in Technology Light is incident from air on the end face of a multimode optical fibre at angle of incidence as shown below. n n 1 2 The refractive indices of the core and cladding are...

Q:

In ANSI standard C a variable can be declared: Select one: O Anywhere in the program. o Only before "main" o Only in the main function O After a curly bracket "{" or outside any function. o Only at...

Q:

1. Fill in the Table below characterizing the following data sets (a)Vehicle miles per gallon (mpg):15.6, 21.78, 30.0, 53.1, 11.5 (b) Coins in a piggy bank: 47 pennies, 30 nickels, 25 dimes, 15...

Q:

1. Fill in the Table below characterizing the following data sets (a)Vehicle miles per gallon (mpg):15.6, 21.78, 30.0, 53.1, 11.5 (b) Coins in a piggy bank: 47 pennies, 30 nickels, 25 dimes, 15...

Q:

1. Fill in the Table below characterizing the following data sets (a)Vehicle miles per gallon (mpg):15.6, 21.78, 30.0, 53.1, 11.5 (b) Coins in a piggy bank: 47 pennies, 30 nickels, 25 dimes, 15...

Q:

1. Fill in the Table below characterizing the following data sets (a)Vehicle miles per gallon (mpg):15.6, 21.78, 30.0, 53.1, 11.5 (b) Coins in a piggy bank: 47 pennies, 30 nickels, 25 dimes, 15...

Q:

350 Specification and Verification II Explain how a register can be modelled either as a unit-delay, or with an explicit clock input. [4 marks] Describe the relationship between the two models. [4...

Q:

I need "Tic Tac Toe game AI" , and "Minimax Algorithm" help please. Please write this code in python and please add the screen shots of the code. Will upvote. Tic-Tac-Toe Game Topics Covered Modules...

Q:

PLEASE help, follow the instructions and do the "GAME AI" as well. python please Tic-Tac-Toe Game Topics Covered Modules Classes, Inheritance, and Polymorphism Recursions Game AI and Minimax...

Q:

How might a salespersons job or a secretarys job be enlarged or enriched to make it more motivating?

Q:

The following balance sheet information represents actual data for 2011 and forecasted data for 2012: The actual income statement for 2011 is as follows: Sales . . . . . . . . . . . . . . . . . . . ....

Q:

Jimmy has a dwelling policy for his rented house and stores personal watercraft ( PWC ) in the garage. One evening while he was attending a workshop, someone broke into the garage and damaged the PWC...

Q:

Oak Valley Company, a custom cabinet manufacturing company, is setting standard costs for one of its products. The main material is cedar wood, sold by the square foot. The current cost of cedar wood...