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Degrees of freedom

Degrees of freedom

in statistics, the number of independent comparisons that can be made between the members of a sample (e.g., subjects, test items and scores, trials, conditions); in a contingency table it is on e less than the number of row categories multiplied by one less than the number of column categories.

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ECOLOGY COURSEWORK STATISTICS HELP!

... all is great except for the explanation of my choice of "infinite degrees of freedom". The weird thing is I was told to do this instead of using the formula, but no ...

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by ShaanP
Mon Nov 24, 2008 5:26 pm
 
Forum: Ecology
Topic: ECOLOGY COURSEWORK STATISTICS HELP!
Replies: 0
Views: 895

Re: Ratio of Phenotypes

... chi-square is compared to a table of chi-squared-critical values for 3 degrees of freedom. To be significant at the 0.1 level—the sort of “minimal” level to be considered significant—the ...

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by blcr11
Wed Jan 23, 2008 6:14 pm
 
Forum: Genetics
Topic: Ratio of Phenotypes
Replies: 3
Views: 686

Re: Draco's Biology revision

... value is then compared to a table of critical chi-squared values for 3 degrees of freedom for a dihybrid cross (#phenotype groups – 1). If the observed chi-squared is less than ...

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by blcr11
Wed Jan 16, 2008 12:33 pm
 
Forum: General Discussion
Topic: Draco's Biology revision
Replies: 7
Views: 754

t-test help

... an unpaired t-test performed at 12:04 on 28-NOV-2007 t= 2.83 sdev= 4.24 degrees of freedom = 21 The probability of this result, assuming the null hypothesis, is 0.0100 Group ...

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by handbanana
Wed Nov 28, 2007 6:18 pm
 
Forum: General Discussion
Topic: t-test help
Replies: 14
Views: 1925

t-test help

... you have to compare it to a tabulation of t-values calculated for your degrees of freedom and see whether your observed t is large enough to reject the null hypothesis or not. ...

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by blcr11
Mon Nov 19, 2007 7:56 pm
 
Forum: General Discussion
Topic: t-test help
Replies: 14
Views: 1925
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