[Extra] Probability Inequality

알아두면 유용한 Inequality 공식들(다른 증명에 유용하다.)

• Markvos's Inequality
  

• Chebyshev's Inequality
  

• Cauchy-Schwarts Inequality

  • if X, Y is finite variable
  • this shows why correlation is between -1 and 1

• Jensen's Inequality

  • if convex(아래로 볼록)
  • if concave(위로 볼록)