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Sample size

sample size

The number of units (persons, animals, patients, specified circumstances, etc.) in a population to be studied. The sample size should be big enough to have a high likelihood of detecting a true difference between two groups.


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Questions about DNA dialysis

Hi, sample loss would be a technical thing about he gizmo you bought. If you are not near the size cut off there shouldn't be much loss, I'd think, except the bit of volume stuck in the gizmo if you have small ...

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by biomart
Wed Mar 11, 2015 7:43 am
 
Forum: Bioinformatics
Topic: Questions about DNA dialysis
Replies: 1
Views: 279

Re:

... brains have shown that the brains of different races are of different sizes. The Worldwide Pattern of IQ Scores. East Asians average higher on ... that Asians scored 6 points ahead due to their lower and unrepresented sample of selected subjects and higher visuospatial intelligence, but very ...

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by Seth90210
Wed Feb 25, 2015 2:37 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 75
Views: 332505

Basic Knowledge about DNA Extraction

... DNA of interest, which is often done by sonicating or bead beating the sample. It has been proved that vortexing with phenol is often a effective ... will migrate through the gel toward the positive charge. And different sized pieces of DNA will move at different rates, thereby creating a size ...

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by 2444256703
Thu Jan 22, 2015 8:56 am
 
Forum: Genetics
Topic: Basic Knowledge about DNA Extraction
Replies: 0
Views: 738

Living or not? (viruses,viroids and prions).

... was anything but stripped down; it carried a genome nearly the size of some bacterial species. And, instead of simply hijacking its host, ... different species of amoeba, expose them to a variety of environmental samples, and see if anything big starts growing in them. They hit pay dirt ...

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by Sumanth001
Sun Dec 08, 2013 12:37 pm
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
Replies: 15
Views: 17982

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... at all unreasonable for human intelligence to correlate well with brain size, or with the ratio of brain mass to body mass. We can more-or-less see ... body size, age of death, nutritional state in early life, source of the sample, occupational group, cause of death, lapse of time after death, ...

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by Seth90210
Sat Oct 26, 2013 7:38 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 75
Views: 332505
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