Confidence intervals, illustrated

If you resample very many times, and compute confidence intervals for each sample, then a 95% CI means that 95% of those intervals will capture the true pop. value of the random variable.

Also, the larger your sample, the lower your margin of error:

Algorithms, illustrated

Really just some illustrated math, but then again...

Agglomeration economies, illustrated

Demographic winter, illustrated

Source here.

Trade and commerce, illustrated