From a statistical perspective, relationships among variables may take a broad array of forms. Sometimes, two variables may be unrelated to one another, such as (presumably) the scores on some college ...

Vikki Velasquez is a researcher and writer who has managed, coordinated, and directed various community and nonprofit organizations. She has conducted in-depth research on social and economic issues ...

What’s the greatest shortcoming of the human race? I’m sure we all have some suggestions, but according to physicist Albert Bartlett, it is “our inability to understand the exponential function.” ...