PV（プロモーションビデオ）・MV（ミュージックビデオ）やライブ動画を無料で視聴できる-MyDo(マイ動画)音楽情報館

Lognormal distribution について・・・

Here I explain an idea that is confusing the first time you see it: a variable is lognormally distributed if its log (or natural log) is normally distributed. I use an example of future stock price: it the rate of return is normally distributed (it can be negative), the future stock price level is lognormally distributed (it cannot be negative!).