Re: Lost your home? Car? Everything? Thank a bicyclist and the California road diet.

On Thu, 16 Jan 2025 16:58:03 -0500, Catrike Ryder
<Soloman@old.bikers.org> wrote:

On Thu, 16 Jan 2025 12:57:50 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:
>

On Thu, 16 Jan 2025 12:46:45 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:
>

Incidentally, the author is also responsible for the Spurious
Correlations web site:
<https://tylervigen.com>

>
"The number of bicycle repairers in California correlates with..."
<https://tylervigen.com/spurious/variable?id=5582>
Scroll down the list for various correlations.
>
The highest correlation (r=0.964) is with "The number of like on Mark
Rober YouTube videos:"
<https://tylervigen.com/spurious/correlation/7307_the-number-of-bicycle-repairers-in-california_correlates-with_the-average-number-of-likes-on-mark-rober-youtube-videos>

>
wow! Who could have guessed? What does all that mean?

It means correlation does not imply causation.
<https://en.wikipedia.org/wiki/Correlation_does_not_imply_causation>
Just because the trend lines for the number of likes on Mark Rober's
YouTube videos statistically correlates closely to the trend line for
the number of bicycle repair techs in California does no mean that one
can use future bicycle repair statistics to predict the number of
bicycle repair techs in the future.

The page of confusing statistics, numbers, formulas, etc are all about
where he obtained his data and how he calculated how close the two
trend lines match.  That's the right way to "show your work" when one
makes a claim.  I wish there were more such calculations.

Mark Rober's videos on building squirrel proof bird feeders, exploding
glitter bombs to discourage porch pirates, and various over-engineered
gadgets are intended for kids, but are equally interesting to adults:
<https://www.youtube.com/@MarkRober/playlists>
<https://www.youtube.com/@MarkRober/videos>
He's one of the few adults that have the "knack" for getting kids
interested in engineering.
<https://www.crunchlabs.com>
--
Jeff Liebermann                 jeffl@cruzio.com
PO Box 272      http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann      AE6KS    831-336-2558