the Hurst exponent reveals about time series

Inverted yield curve

Short-term rates exceed long-term, often predicts recession

Beta (finance)

Beta measures a stock's volatility relative to the market

implied volatility tells you

Ever wondered how traders predict stock swings?

Cronbach's alpha

Cronbach's alpha (α) measures internal consistency

Volatility smile

Implied volatility varies with strike price, contradicting Black-Scholes

Phillips curve

Phillips curve shows inverse relationship between unemployment and inflation