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Something is Askew in Florida's Wate...

West, Amie October.

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Something is Askew in Florida's Water: Arguing for a Better Descriptive Statistic for Positively Skewed Water-Quality Data.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Something is Askew in Florida's Water: Arguing for a Better Descriptive Statistic for Positively Skewed Water-Quality Data./
作者:	West, Amie October.
面頁冊數:	131 p.
附註:	Source: Masters Abstracts International, Volume: 51-01.
Contained By:	Masters Abstracts International51-01(E).
標題:	Geology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1515389
ISBN:	9781267501691

Something is Askew in Florida's Water: Arguing for a Better Descriptive Statistic for Positively Skewed Water-Quality Data.
West, Amie October.

Something is Askew in Florida's Water: Arguing for a Better Descriptive Statistic for Positively Skewed Water-Quality Data. - 131 p.

Source: Masters Abstracts International, Volume: 51-01.

Thesis (M.S.)--University of South Florida, 2012.

It may be of no surprise that water quality data is right-skewed, but what appears to be overlooked by some is that the arithmetic mean and standard deviation most often fail as measures of central tendency in skewed data. When using the arithmetic mean and arithmetic standard deviation with nutrient data, one standard deviation about the arithmetic mean can capture nearly all of the data and extend into negative values. Representing nutrient data this way can be misleading to viewers who are using the statistics, and making assumptions, to understand the characteristics of those waters. Through an in-depth statistical analysis of Florida's nitrogen and phosphorus data, I have found the geometric mean and multiplicative standard deviation capture a better representation of the central region of skewed data. Including the geometric mean and multiplicative standard deviation in the descriptive statistics of nutrient data is relatively simple with today's tools and helps to better describe the data. Adding these statistics can contribute to more effective understanding of nutrient concentrations, better application of data, and the development of better data-derived policy. While the suggestions of this paper are by no means original, it is with added evidence provided by the study of the skewness, distributions, and central regions of 53 nutrient data sets that I intend to help reiterate the argument that a few additional descriptive statistics can greatly empower the communication of data, and because of the ease with which they can now be calculated, there is no excuse to ignore them.

ISBN: 9781267501691Subjects--Topical Terms:

516570
Geology.

Something is Askew in Florida's Water: Arguing for a Better Descriptive Statistic for Positively Skewed Water-Quality Data.
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