the fourth moment is called kurtosis wowthat' fancy wordall that really isis how thick is the tail and how sharp is the peak so againit' measure of the shape of the data distribution here' an exampleyou can see that the higher peak values have higher kurtosis value the topmost curve has higher kurtosis than the bottommost curve it' very subtle differencebut difference nonetheless it basically measures how peaked your data is let' review all thatthe first moment is meanthe second moment is variancethe third moment is skewand the fourth moment is kurtosis we already know what mean and variance are skew is how lopsided the data ishow stretched out one of the tails might be kurtosis is how peakedhow squished together the data distribution is