上網睇左好多detail唔太明,不如教我點禁掣,,請寫中文.
更新1:
and then 請問,點用 Casio FX50-F 計算機計 variance? 列按法步驟.thanks
更新2:
係用 Casio FX50-FH 計算機計 variance
更新3:
Also cumulative relative frequency點計?