Answers

(2)以下を計算すれば出てきます
分散s²
={(8-4.5)²+(1-4.5)²+(7-4.5)²+(2-4.5)²+(9-4.5)²+(3-4.5)²+(1-4.5)²+(5-4.5)²}÷8
=・・・
ーーーーーーーーーーー
標準偏差
=√分散
=・・・

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