Cholesterol Scale of Measurement?
Fun
hope you can help me with this simple question:
would you be so kind to tell me what is the Scale of Measurement of
Cholesterol ?
is that an interval or ratio or whatever scale?
i found this question in a quiz about statistics.
Jim Langston
Fun
> Fun wrote:
>> Hello guys
>> hope you can help me with this simple question:
>>
>> would you be so kind to tell me what is the Scale of Measurement of
>> Cholesterol ?
>> is that an interval or ratio or whatever scale?
>>
>> i found this question in a quiz about statistics.
>
> http://en.wikipedia.org/wiki/Cholesterol
>
> It seems to be Xmg/dL
yes but what i need to know is:
is that a ratio scale, an interval scale or what?
Jim Langston
http://www.faqs.org/faqs/diabetes/faq/part1/section-9.html
milligarms/deciliter. Kinda like ppm Parts Per Million.
So a cholesterol reading of 200 would be 200 milligrams of cholesterol per a
deciliter of blood.
--
Jim Langston
tazm...@rocketmail.com
Nick
In the UK it is mmol/litre (and maybe the rest of europe). eg < 5.2 is
good > 6.2 is very bad.
A mmol is 1/1000 of a mole. A mole is a measurement used in chemistry
and refers to the number of molecues. 1 mole = 6.02214×1023 molecules.
See Avogadro's number.
To convert between the two you would need to know the molecule weight of
cholesterol. Which is 386.65 g/mol. or 386.5 mg/mmol.
So the conversion factor would be.
(molecular weight of cholesterol) * (litres per decilitre)
386.65 * 1/10
so 5.2 mmol/litre = 5.2* 38.665 = 201.058 mg/dL
Frederick Williams
Those are called units. What the op means by scale is not clear to me.
--
How unlike the home life of our own dear Queen.
Remove "antispam" and ".invalid" for e-mail address.
Nick
> Jim Langston wrote:
>> Fun wrote:
>>> Jim Langston explained :
>>>> Fun wrote:
>>>>> Hello guys
>>>>> hope you can help me with this simple question:
>>>>>
>>>>> would you be so kind to tell me what is the Scale of Measurement of
>>>>> Cholesterol ?
>>>>> is that an interval or ratio or whatever scale?
>>>>>
>>>>> i found this question in a quiz about statistics.
>>>> http://en.wikipedia.org/wiki/Cholesterol
>>>>
>>>> It seems to be Xmg/dL
>>> yes but what i need to know is:
>>> is that a ratio scale, an interval scale or what?
>> http://www.faqs.org/faqs/diabetes/faq/part1/section-9.html
>>
>> milligarms/deciliter. Kinda like ppm Parts Per Million.
>>
>> So a cholesterol reading of 200 would be 200 milligrams of cholesterol per a
>> deciliter of blood.
>
> Those are called units. What the op means by scale is not clear to me.
>
took the opportunity to answer the question I was interested in. Not the
one asked.
Isn't the technical term a concentration. Which is effectively a ratio.
The ratio of specific substance/total mixture.
Jim Langston
Well, the data provides the answer if the links are followed, whatever the
OP meant by "Scale". If > 200 mg/dL is good or bad is arbitrary. We say
that over 200 is bad. I would say that ~100 mg/dL is good. So twice as much
is bad *shrug*
It is how much cholesterol is in the blood. It's not a percentage, but
could be calculated to a percentage fairly easy. I'm quite sure what an
interval scale is so don't know if it is or not. It's simply how much
cholesterol (in mmols or mg) are in a certain amount of blood.
--
Jim Langston
tazm...@rocketmail.com
Odysseus
Nick <nos...@spam.com> wrote:
> Frederick Williams wrote:
> >>>> Fun wrote:
> >>>>> would you be so kind to tell me what is the Scale of Measurement of
> >>>>> Cholesterol ?
> >>>>> is that an interval or ratio or whatever scale?
<snip>
> > Those are called units. What the op means by scale is not clear to me.
> >
> Ah I see what the OP is getting at, having high cholesterol myself I
> took the opportunity to answer the question I was interested in. Not the
> one asked.
>
> Isn't the technical term a concentration. Which is effectively a ratio.
> The ratio of specific substance/total mixture.
Yes, concentration is on a "ratio scale", because it's in direct
proportion with an absolute zero. IIRC the other categories of
measurement are on a "nominal scale" (qualitative only), an "ordinal
scale" (ranked but arbitrarily spaced, like the mineralogical hardness
scale), or an "interval scale" (equally spaced but with an arbitrary
origin, like temperatures in 蚓 or 蚌).
--
Odysseus