The latter two use variance to determine whether to buy, sell, or hold securities. For example, if an investment has a greater variance, it could be considered more volatile and risky.

May 30, 2025 — Singing to your infant can significantly boost the baby's mood, according to a recent study. Around the world and across cultures, singing to babies seems to come instinctively to ...

Katharine Beer is a writer, editor, and archivist based in New York. She has a broad range of experience in research and writing, having covered subjects as diverse as the history of New York City ...