[carcrazy]

Originally Posted by squidtone

Me saying "popularity" in the chart was probably not a good word to use. But the chart is based on actual data for 667 cars. Basically an almost 1 percent sample of 1967 GTO production.

Statisticians would have something to say about how accurate the color break down is for a 1 percent sample (population mean, sample mean, error bars...etc), but I'll bet the chart is not too far off from actual color break down. So, my stats say 1.6% of the 667 sample were Plum Mist. If you extrapolate, that would be about 1400 of all produced 67 GTOs were Plum Mist. (See statisticians for how accurate that is)

And anecdotally, for the years I've soaked in 67 GTO lore, I'd certainly believe Signet Gold, Regimental Red and Tyrol Blue were the top colors produced.

I'd also say Starlight Black, Fathom Blue and Plum Mist are pretty rare beasts.


If the PHS folks ever get really bored, I'd imagine they are the ones who could crank out the most accurate estimates for exterior colors and trim codes since they likely have almost all production records (billing history cards).

With the population (production numbers) and your sample size the figures you provided are pretty accurate. Margin of error would between 3%-4% for a 95% confidence factor. Great information. For the record my current car was signet and my previous car was regimental red...the two most popular colors!

[squidtone]

carcrazy, thanks for the input on the statistics!