Discover how standard deviation calculates investment risk and market volatility, helping investors make informed decisions.

Pick five numbers from 1 to 69 Pick a Powerball number from 1 to 26 Add the optional Power Play option Add the optional Double Play Drawings at 11 p.m. ET Mondays, Wednesdays and Saturdays ...

Studio 2 Extra: Nikole Hannah-Jones on erasing Black history and civil rights With the slavery exhibit back at Philadelphia’s President’s House, we spoke with Pulitzer winner Nikole Hannah-Jones on ...