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Comment Just a basic stats question (Score 1) 215

I'm being purely hypothetical, but let's work out a word problem.

So let's assume that there's some DNA in question, and that dna according to all 10 other calculations (assumed accurate) has a unique match number of 1 in 100,000.

Nobody ever asked if the defendant has a twin. (Again, assuming that an identical twin would have matching DNA which I don't actually know for certain).

Let's assume for simple math that in the real world twins occur 1/100 times.

Is the statistical uniqueness now 1/1000, 1/2, 1/50,000, or 1/100,000 or some other number.

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