The normal distribution 正态分布 Bell Shaped Symmetrical f(X) Mean Median and Mode are Equal X Middle Spread? Mean Equals1.33σ Median Random variable has Mode Infinite RangeThe Normal Distribution 正态分布 • Bell Shaped • Symmetrical • Mean, Median and Mode are Equal • Middle Spread? Equals 1.33  • Random Variable has Infinite Range Mean Median Mode X f(X) 