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T distribution

t distribution

The distribution of the quotient of independent random variables, the numerator of which is a standardised normal variate and the denominator the positive square root of the quotient of a chi-square distributed variate and its number of degrees of freedom.


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Re:

... the population to a ditribution of beak sizes which were smaller. Over many generations, this can potentially shift the population to a size distribution outside the original range! If two populations undergo a different line of evolutionary change long enough, they will no longer be able ...

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by robsabba
Fri Aug 28, 2009 5:29 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16271

cryogenics?

... colder). However, currently there are no means to cryogenically store bigger animals, not to mention warm-blooded mammals such as humans. Uneven distribution of cryopreservants, uneven freezing/thawing speeds and the complexity of systemic functions such as respiration, circulation, digestion ...

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by biohazard
Mon Aug 17, 2009 6:02 am
 
Forum: General Discussion
Topic: cryogenics?
Replies: 3
Views: 55

Genetics Problems... Friends i need ur help

... - type of transmission (i.e. recessive/dominant or codominance) - gene linkage (i.e. are they on the same chromosome or not) and calculate the distribution of phenotype in each case (just like above, draw punnet squares and count the sections)

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by canalon
Thu Jul 16, 2009 2:03 am
 
Forum: Genetics
Topic: Genetics Problems... Friends i need ur help
Replies: 5
Views: 225

Re: Diversifying selection

... address sexual selection. Any selection can cause divergence. It's a simple concept really. Imagine a standard bell-curve as an "ideal" distribution of a trait in a population - then add selective pressure to the very middle of that distribution, and you'll get divergence. To answer ...

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by AstusAleator
Sun Jul 12, 2009 5:41 am
 
Forum: Evolution
Topic: Diversifying selection
Replies: 15
Views: 437

Flagellum Motor:Is this Scientific?

No AFJ, NS is certainly not directional. It seems to go toward mor complexity, but it is in fact a simple artifact. Were you to look at the distribution of complexity (measured one way or another) vs number of organisms (or even species or OTU) you would see a distribution extremely skewed to ...

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by canalon
Wed Jul 01, 2009 2:21 am
 
Forum: Evolution
Topic: Flagellum Motor:Is this Scientific?
Replies: 15
Views: 450
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