Question and answer
Explain any two measures of varaibility.
Log in for more information.
Question
Asked 12/4/2008 9:56:49 AM
Updated 45 days ago|4/25/2023 12:39:07 AM
1 Answer/Comment
f
Get an answer
Search for an answer or ask Weegy.
Original conversation
User: Explain any two measures of varaibility.

Weegy: If random variable X has expected value (mean) µ = E(X), then the variance Var(X) of X is given by: This definition encompasses random variables that are discrete, continuous, or neither. [ Of all the points about which squared deviations could have been calculated, the mean produces the minimum value for the averaged sum of squared deviations. The variance of random variable X is typically designated as Var(X), , or simply s2. If a distribution does not have an expected value, as is the case for the Cauchy distribution, it does not have a variance either. Many other distributions for which the expected value does exist do not have a finite variance because the relevant integral diverges. An example is a Pareto distribution whose Pareto index k satisfies 1 < k = 2. [edit] Continuous case If the random variable X is continuous with probability density function p(x), where and where the integrals are definite integrals taken for x ranging over the range of X. [edit] Discrete case If the random variable X is discrete with probability mass function x1 ? p1, ..., xn ? pn, (Note: this variance should be divided by the sum of weights in the case of a discrete weighted variance.) That is, it is the expected value of the square of the deviation of X from its own mean. In plain language, it can be expressed as "The average of the square of the distance of each data point from the mean". It is thus the mean squared deviation. ]

User: What is skewness? discuss its significance in measurements.

Log in for more information.
Question
Asked 12/4/2008 9:56:49 AM
Updated 45 days ago|4/25/2023 12:39:07 AM
1 Answer/Comment
New answers
Rating
3
Skewness is a measure of symmetry, or more precisely, the lack of symmetry.
Log in for more information.
Added 45 days ago|4/25/2023 12:39:07 AM
This answer has been confirmed as correct and helpful.
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
37,977,405
questions answered
Share your journey.
W I N D O W P A N E
FROM THE CREATORS OF
weegy
WINDOWPANE is the live-streaming app for sharing your life as it happens, without filters, editing, or anything fake.

Because you're already amazing.

Connect with others, with spontaneous photos and videos, and random live-streaming. Post thoughts, events, experiences, and milestones, as you travel along the path that is uniquely yours.

Share your world.
Popular Conversations
where to find main idea of a paragraph
6/5/2023 9:32:58 PM| 11 Answers
_______ involves talking with other people and learning from them. ...
5/30/2023 6:51:24 PM| 9 Answers
How many states formed the confederary?
Weegy: 11 (Eleven): states formed the confederacy.
5/30/2023 12:26:08 PM| 7 Answers
what is 23 squared
Weegy: 23 squared is 529. 23 * 23 = 529 User: solve for x in the equation x plus 10 equals 15 Weegy: y + ( 6) = 9 ...
5/31/2023 8:35:29 AM| 7 Answers
A particle that has a negative charge
6/7/2023 4:04:40 AM| 6 Answers
What types of pollution in the Great Lakes has human activity caused? ...
6/1/2023 12:19:19 PM| 6 Answers
Organizational development specialists focus on __________.
5/31/2023 3:53:38 AM| 6 Answers
When you are ready to pass, signal the vehicle behind you using your ...
Weegy: When you are ready to pass, signal the vehicle behind you using your turn signal. TRUE, you must use your turn ...
6/4/2023 8:46:51 PM| 5 Answers
thomas is 3 months old and weighs 15 lb 6 oz thomas is prescribed a ...
6/8/2023 12:43:50 AM| 5 Answers
The steps to analytical problem solving model include
Weegy: The steps of the analytical problem-solving model include: identifying the problem, exploring, selecting ...
6/6/2023 7:36:45 PM| 5 Answers
what is thesaurus
Weegy: Thesaurus is: a dictionary of synonyms and antonyms. User: the story's theme should relate to Weegy: "When ...
6/5/2023 9:25:05 PM| 5 Answers
ICS which statement best describes form 201
Weegy: ICS Form 201: can be used for briefing incoming resources, an incoming Incident Commander or team, or an ...
5/30/2023 2:47:31 PM| 4 Answers
Share your window.
W I N D O W P A N E
FROM THE CREATORS OF
weegy
WINDOWPANE is the live-streaming app for sharing your life as it happens, without filters, editing, or anything fake.

Because you're already amazing.

Connect with others, with spontaneous photos and videos, and random live-streaming. Post thoughts, events, experiences, and milestones, as you travel along the path that is uniquely yours.

Share your world.
Top Ranked Experts *
Order Points Ratings Comments Invitations
KuyaDens
S
R
L
Points 490 [Total 1270] Ratings 3 Comments 460 Invitations 0 Online
R-D
S
L
Points 413 [Total 1104] Ratings 0 Comments 413 Invitations 0 Offline
Btsjungkook
S
L
Points 360 [Total 1269] Ratings 1 Comments 340 Invitations 1 Offline
MissCamero
S
L
Points 325 [Total 2874] Ratings 0 Comments 325 Invitations 0 Offline
Ortencio
S
L
Points 211 [Total 1210] Ratings 1 Comments 201 Invitations 0 Offline
n.omerez
S
L
P
L
P
C
R
Points 190 [Total 5253] Ratings 4 Comments 150 Invitations 0 Offline
Hotherian
S
L
Points 178 [Total 373] Ratings 2 Comments 158 Invitations 0 Offline
Bench_14
S
L
P
R
L
Points 173 [Total 5212] Ratings 0 Comments 173 Invitations 0 Offline
Kuyaflo
S
L
P
L
Points 152 [Total 7620] Ratings 0 Comments 152 Invitations 0 Offline
KuyaBert_09
S
L
R
L
P
C
Points 113 [Total 7299] Ratings 0 Comments 113 Invitations 0 Offline
Find»
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.