Question about the C3 Registry info
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Joined: Jun 2012
Posts: 52
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From: Dodge City Kansas
Question about the C3 Registry info
I added my 82 CE on the c3registry.org site and had a question about the options info. At the bottom of the options info it says Total and under Percent Sold 5% am I correct in thinking it means that 5% of the 25,407 vettes produced in 1982 had the options mine has?
Thanks
Thanks
Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 331
From: Indy Indiana
it does a mathematical calculation based on number of options sold. the math is correct, but the premise is incorrect statistically. the more options you put in, the more statistical error there is.
for example, you know how many red cars were produced, but you cannot show how many red cars with cruise control were produced. the tool attempts to guesstimate that.
for example, you know how many red cars were produced, but you cannot show how many red cars with cruise control were produced. the tool attempts to guesstimate that.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Revise your options list on the registry and the .0005 is likely to change. For all CEs, CC1 glass tops, C49 rear defrost, QXH tires, and U75 power antenna were base equipment and included in the cost of the CE package.
You can get to the .0005% figure if you begin multiplying percentages by percentages which is, of course, mathmatically incorrect. Keep going and you will eventually arrive at their conclusion - yours is the only existing car with your options combinations.
You can get to the .0005% figure if you begin multiplying percentages by percentages which is, of course, mathmatically incorrect. Keep going and you will eventually arrive at their conclusion - yours is the only existing car with your options combinations.
Last edited by Easy Mike; Jul 26, 2012 at 12:17 PM.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
it does a mathematical calculation based on number of options sold. the math is correct, but the premise is incorrect statistically. the more options you put in, the more statistical error there is.
for example, you know how many red cars were produced, but you cannot show how many red cars with cruise control were produced. the tool attempts to guesstimate that.
for example, you know how many red cars were produced, but you cannot show how many red cars with cruise control were produced. the tool attempts to guesstimate that.
Any and all of these silly calculators have multiple and fatal flaws in the way they try to figure out how many cars were built with which combinations of options.
Biggest error- they don't take into account which options a car DOESN'T have when more than 50% were built with it. If 95% of cars were built with (for example) A/C, the 5% without A/C are 'rare'. The calculators don't take this in account.
Somebody go register a car that has NO options at all- a real 'stripper'. In reality there was very very few cars built that way but the calculators will tell you that there was 40% or more in every year of production.....
