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Archiver > GENEALOGY-DNA > 2006-10 > 1160433860


From: "Ken Nordtvedt" <>
Subject: Re: [DNA] E3b's in England - a followup surprise
Date: Mon, 9 Oct 2006 16:44:20 -0600
References: <415.f213b2e.325bb9c5@aol.com><003e01c6ebf3$563df880$640fa8c0@Villandra2>


Dora, Then you would lose the metric that 10 is next to 11, as is 12, etc.,
and empirically the repeats tend jump by plus or minus one unit of repeat
most of the time when they mutate. If it had turned out that STRs jumped
with comparable probability most any number of steps up or down, then you
would have a point.


----- Original Message -----
From: "Dora Smith" <>
To: <>
Sent: Monday, October 09, 2006 4:36 PM
Subject: Re: [DNA] E3b's in England - a followup surprise


> The size of a family is an ordinal number.
>
> The use of numbers in DNA types is categorical. The DNA types could as
> well be labelled with letters, or colors, or shapes. And perhaps they
> should be.
>
> Yours,
> Dora Smith
> Austin, TX
>
> ----- Original Message -----
> From: <>
> To: <>
> Sent: Monday, October 09, 2006 9:42 AM
> Subject: Re: [DNA] E3b's in England - a followup surprise
>
>
>> In a message dated 10/9/2006 7:31:02 AM Pacific Daylight Time,
>> writes:
>>
>>> Yes, you can certainly add two numbers and divide by two, but what does
>>> the
>>>
>>> result mean? That everyone in the sample is half one type and half the
>>> other? Grin!
>>
>> Of course not. It's the same as saying the average family size is 2.3
>> children. Some families have one, some have two, some have three, some
>> have four,
>> etc.
>>
>> Ann Turner
>>
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