島根大学農学部研究報告

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島根大学農学部研究報告 16
1982-12-20 発行

対数正規分布とその応用(第1報) : 直径分布へのあてはめ

Lognormal distribution and its applications : Fitting to diameter distributions
山本 充男
安井 鈞
本田 秀昭
ファイル
内容記述(抄録等)
Diameter distributions of Jack pine can be discribed by the three-parameter lognormal distribution, in which the variate is x=log(y+y_0). Agreement between the observed and the expected frequencies is tested by the chi-square test. On comparing the normal and the lognormal distributions the normal achieves a good fit to the young stands and the lognormal does to the old stands.