Talk:Average absolute deviation

From Wikipedia, the free encyclopedia
  (Redirected from Talk:Absolute deviation)
Jump to: navigation, search
WikiProject Statistics (Rated Start-class, Mid-importance)
WikiProject icon

This article is within the scope of the WikiProject Statistics, a collaborative effort to improve the coverage of statistics on Wikipedia. If you would like to participate, please visit the project page or join the discussion.

Start-Class article Start  This article has been rated as Start-Class on the quality scale.
 Mid  This article has been rated as Mid-importance on the importance scale.
WikiProject Mathematics (Rated Start-class, Mid-importance)
WikiProject Mathematics
This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of Mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Mathematics rating:
Start Class
Mid Importance
 Field: Probability and statistics

Average Absolute Deviation vs. Mean Absolute Deviation[edit]

This article is VERY poorly worded. In particular the "average absolute deviation" section claims that the 'average absolute deviation' is the same as the 'mean absolute deviation' which makes sense. However the following section is titled "mean absolute deviation" and gives an alternative definition which implies that the 'average absolute deviation' and the 'mean absolute deviation' are in fact different. The alternative definition also utilizes a variable 'Fi' which is not defined anywhere in the article. — Preceding unsigned comment added by (talk) 05:27, 14 December 2011 (UTC)

I came to say the same thing. The two sections should be merged into one, and whoever created the secondmost of the two (rather than editing whatever was there first) must be shot at dawn. Glenbarnett (talk) 05:04, 11 July 2012 (UTC)

also Need to clarify what M means in "MAD" it's used for both mean absolute and median absolute. Please change the mean to AAD or only let it reference the one it actually represents... -- (talk) 21:12, 10 November 2012 (UTC)

I've gone ahead and tried to clean up the section on the Average Absolute Deviations. It is still somewhat messy, but I no longer think there are duplicitous definitions. The article still seems unfocused, and could be better served by framing the uses of absolute deviations with contexts rather than just using formulas. Douglas Whitaker (talk) 18:53, 20 February 2013 (UTC)

The terminology usage was still poorly woven. I hope my updates are an improvement. LarryLACa (talk) 02:40, 24 August 2014 (UTC)

expected value?[edit]

As a summary statistic, this isn't an expected value because it's not in regard to a random variable, but the actual data. Should the "expected value" be removed, or should it be described aas the expected value of something else? Cretog8 (talk) 20:12, 2 July 2008 (UTC)

Contrast Section Needed[edit]

A contrast with standard deviation would help make this more clear for those less adept at math. I would add this, except I am less adept at math. (talk) 16:36, 9 July 2010 (UTC)

A Greek Symbol for the Mean Absolute Deviation?[edit]

For standard deviation, the Greek letter, σ, is used in statistics. Is there a Greek letter conventionally used for the Mean Absolute Deviation? Roland 01:19, 29 May 2013 (UTC)

Assessment comment[edit]

The comment(s) below were originally left at Talk:Average absolute deviation/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

improve the lead's readability for layman.--Cronholm144 01:02, 13 May 2007 (UTC)

The initials "MAD" are used here for "Mean Absolute deviation" and in the second linked article for "Median Absolute Deviation". I think this should be fixed to avoid confusion. —Preceding unsigned comment added by Doronp (talkcontribs) 21:41, 3 April 2008 (UTC)

Substituted at 21:35, 26 June 2016 (UTC)