數(shù)理統(tǒng)計(jì)實(shí)驗(yàn)A描述統(tǒng)計(jì)

1、實(shí)驗(yàn)1 描述統(tǒng)計(jì) Descriptive Statistics9/9/20221離散變量描述統(tǒng)計(jì)Descriptive Statistics onDiscrete Variable Samples實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/20222實(shí)驗(yàn)1 描述統(tǒng)計(jì)(1)離散變量樣本在某汽修廠觀測(cè)每天送修的汽車數(shù)X，連續(xù)觀測(cè)30天獲得一個(gè)樣本如下：1, 4, 1, 5, 4, 2, 3, 2, 4, 3, 2, 1, 2, 3, 2, 2, 0, 1, 2, 2, 3, 1, 2, 3, 2, 1, 0, 2, 3, 19/9/20223由給定的樣本統(tǒng)計(jì)頻數(shù)分布、累積頻數(shù)、頻率和累積頻率，以三線表樣式制作頻數(shù)頻率

2、分布表；基于觀測(cè)計(jì)算樣本的均值、方差、標(biāo)準(zhǔn)差、標(biāo)準(zhǔn)誤、變異系數(shù)；基于頻數(shù)計(jì)算樣本的均值、方差、標(biāo)準(zhǔn)差、標(biāo)準(zhǔn)誤、變異系數(shù)；繪制樣本的頻數(shù)分布柱形圖(2)實(shí)驗(yàn)任務(wù)實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/20224xn(x)cn(x)fn(x)cf(x)0220.06670.06671790.23330.3000211200.36670.666736260.20000.866743290.10000.966751300.03331.0000實(shí)驗(yàn)1 描述統(tǒng)計(jì)(3)頻數(shù)頻率分布表送修汽車數(shù)頻數(shù)頻率統(tǒng)計(jì)表9/9/20225實(shí)驗(yàn)1 描述統(tǒng)計(jì)(4)頻數(shù)分布柱形圖9/9/20226實(shí)驗(yàn)1 描述統(tǒng)計(jì)(5)基于頻數(shù)的樣本統(tǒng)計(jì)量計(jì)算

3、9/9/20227實(shí)驗(yàn)1 描述統(tǒng)計(jì)(5)基于頻數(shù)的樣本統(tǒng)計(jì)量計(jì)算9/9/20228N 30 Minimum 0Maximum 5.0000Mean 2.1333Variance 1.4299Std Dev 1.1958Std Error 0.2183Coeff Variation 56.0521實(shí)驗(yàn)1 描述統(tǒng)計(jì)參考答案(5)基于頻數(shù)的樣本統(tǒng)計(jì)量計(jì)算9/9/20229連續(xù)變量描述統(tǒng)計(jì)Descriptive Statistics onContinuous Variable Samples實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/202210(1)連續(xù)變量樣本實(shí)驗(yàn)1 描述統(tǒng)計(jì)21, 20, 19, 16, 23, 1

4、9, 35, 25, 32, 22, 23, 34, 35, 24, 37, 27, 26, 41, 33, 31, 27, 19, 23, 38, 7, 18, 22, 25, 9, 28某企業(yè)加工了一批孔徑75的軸套，現(xiàn)從中隨機(jī)抽取30個(gè)進(jìn)行檢驗(yàn)，測(cè)得75孔徑的加工偏差（單位：m）樣本如下：若規(guī)定孔徑75的公差帶為H8，問(wèn)抽樣的軸套是否合格？9/9/202211樣本分組：確定分組數(shù)k、組距I、第1組組下限；進(jìn)而確定各個(gè)組的組限和組中值；統(tǒng)計(jì)組頻數(shù)，計(jì)算累積頻數(shù)、頻率和累積頻率，以三線表樣式完成頻數(shù)頻率分布表；基于觀測(cè)計(jì)算樣本的均值、方差、標(biāo)準(zhǔn)差、標(biāo)準(zhǔn)誤和變異系數(shù)；基于頻數(shù)計(jì)算樣本的均值、方

5、差、標(biāo)準(zhǔn)差、標(biāo)準(zhǔn)誤和變異系數(shù)；繪制頻數(shù)分布直方圖(2)實(shí)驗(yàn)任務(wù)實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/202212(3)頻數(shù)頻率統(tǒng)計(jì)表組序組區(qū)間組中值頻數(shù)累積頻數(shù)頻率累積頻率1(-,117220.06670.06672(11,1915570.16670.23343(19,272313200.43330.66674(27,35317270.23330.90007(35,+)393300.10001.000075軸徑加工偏差頻數(shù)頻率分布表實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/202213(4)頻數(shù)分布直方圖實(shí)驗(yàn)1 描述統(tǒng)計(jì)9/9/202214實(shí)驗(yàn)1 描述統(tǒng)計(jì)(5)基于觀測(cè)的樣本統(tǒng)計(jì)量計(jì)算9/9/202215實(shí)驗(yàn)1 描述統(tǒng)計(jì)(5

6、)基于觀測(cè)的樣本統(tǒng)計(jì)量計(jì)算9/9/202216N 30Minimum 7.0000Maximum 41.0000Mean 25.3000Variance 65.6655Std Dev 8.1034Std Error 1.4795Coeff Variation 32.0294 實(shí)驗(yàn)1 描述統(tǒng)計(jì)參考答案(5)基于觀測(cè)的樣本統(tǒng)計(jì)量計(jì)算9/9/202217實(shí)驗(yàn)1 描述統(tǒng)計(jì)(6)基于頻數(shù)的樣本統(tǒng)計(jì)量計(jì)算9/9/202218實(shí)驗(yàn)1 描述統(tǒng)計(jì)(6)基于頻數(shù)的樣本統(tǒng)計(jì)量計(jì)算9/9/202219N 30Minimum 7.0000Maximum 41.0000Mean 24.0667Variance 69.4437Std Dev 8.3333S