單元3--spc統(tǒng)計(jì)過(guò)程控制-文庫(kù)吧
2025-04-22 10:36 本頁(yè)面
【正文】 ?????????????])xx(. . . .)xx()xx[(n1n)xx(f2n2221n1i2ii2n ????????????7 Designed @2021 基本 統(tǒng)計(jì)概 念 ? ?2 方差 /變異 (variance) ? n =數(shù)據(jù)分組 ? X ‘ = X1, X2, X3, X4,… Xn的平均數(shù) 8 Designed @2021 ? ? 標(biāo) 準(zhǔn)差 (standard deviation) 基本 統(tǒng)計(jì)概 念 2222112)(.. .)()[(1)(xxxxxxnnxxnniiin ????????????22221121 )(. ..)()[(111)(xxxxxxnnxxnniin ???????????????9 Designed @2021 例： 1, 1, 2, 3, 4, 6, 11 ? R = 10 ? = 4 ? Md = 3 ? Mo = 1 ? ?n 2 = ?n12 = ? ?n = ?n1 = 基本 統(tǒng)計(jì)概 念 x10 Designed @2021 數(shù) 列 ： 12, 11, 12, 13, 18, 30, 24, 9 請(qǐng)計(jì) 算下列 統(tǒng)計(jì) 量 ? R ? ? Md ? Mo ? ?n 2 = ?n12 = ? ?n = ?n1 = 練習(xí) x11 Designed @2021 數(shù) 據(jù)的收集
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