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Correlation coefficient

Correlation coefficient

a measure of association that indicates the degree to which two variables have a linear relationship; this coefficient, represented by the letter r, can vary between _1 and -1; when r = _1, there is a perfect positive linear relationship in which one variable relates directly with the other; when r = -1, there is a perfect negative linear relationship between the variables.


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question of population genetics

... in genetic variations among the populations with some datasets, by the coefficient of variation (CV) of expected heterozygosity (He). However, some ... is a very similar measure to Fst, and that one might expect a positive correlation between the two. Yet, some very simple examples (e.g.: Case1 ...

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by kamui
Mon Apr 30, 2012 6:18 am
 
Forum: Genetics
Topic: question of population genetics
Replies: 0
Views: 1250

when to carry out a t-test and when to use mann whitney U?

... and non-parametric (Spearman) method to test the significance of the correlation coefficient. The same considerations apply: the non-parametric Spearman method should always ...

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by blcr11
Sat Apr 28, 2007 10:40 pm
 
Forum: General Discussion
Topic: when to carry out a t-test and when to use mann whitney U?
Replies: 1
Views: 1361

The correlation coefficient can be larger than 1 (r>1).

In recent discussion, the correlation coefficient has been mentioned several times. This led me to remember a buried article published years ago ...

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by DreamSciTech
Tue Oct 10, 2006 1:51 am
 
Forum: Human Biology
Topic: The correlation coefficient can be larger than 1 (r>1).
Replies: 0
Views: 2840

Limpet Shell Profile - A Level coursework

... limpets. Maybe work out a limpet height : base ratio? I was thinking of correlation coefficient but im not sure.... Any help at all would be greatly appreciated! Frogman

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by Frogman
Sun Oct 08, 2006 7:30 pm
 
Forum: Ecology
Topic: Limpet Shell Profile - A Level coursework
Replies: 4
Views: 8831

The Fiber Disease

... one from 0 to 60 min and the other from 60 to 120 min. A negative correlation coefficient between the rate of increase in absorption peak intensity recorded by the FOBS ...

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by London
Wed May 17, 2006 8:37 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5427563


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