Is there any correlation in gravity variation?

Question

with the height of the people in the geographic location where gravity is stronger & weaker. Before the advent of world travel.



http://news.bbc.co.uk/2/shared/spl/hi/pop_ups/03/sci_nat_enl_1059064160/html/1.stm

Look at Japan & Australia

eyeonthescreen not to take anything from your thought out & researched answer. However did you not notice that it was before the advent of world travel.

Answer 1

Yes, I think there may well be some correlation, but the correlation is due to an intermediate effect--climate. At lower lattitudes, climates are hotter. Hotter climates favor taller, leaner bodies. Think about Masai warriors and Eskimos and how their bodies fit their climates. So the old saw "correlation doesn't imply causation" is dead-on in this case.

Answer 2

There is no correlation by gravity variation. [See source.] This is clear and needs no statistical study to verify. The cited source shows that height varies considerably from country to country near the same latitudes on Earth. (Check out Japan vs. Canada or the USA for example.)

Since the distance (R) for Earth's center is about the same at a given latitude, the force of gravity (using g as a proxy measurement in W = mg) will be pretty much constant anywhere along that latitude and at the same elevation (e.g. sea level). That results from g = GM/R^2; where M is Earth's mass, R is the radius of the Earth at a given latitude, and G is a constant.

As g is a constant at a given latitude, but the heights vary from country to country along or close to that latitude, we can conclude there is no significant correlation between height and g.

Answer 3

Correlation does not imply causation

-first rule of statistics

Answer 4

No.

The effects are far too small. These changes in gravity are tiny compared to other environmental factors.