高中數(shù)學(xué)：2.2《總體分布估計》蘇教必修3

總體分布.抽樣序號n=25n=250n=2500mm/nmm/nmm/n110.04120.0481570.0628240.16140.0561520.0608300.00170.0681570.0628400.00110.0441360.0544510.04220.0881520.0608610.0490.0361350.0540720.08150.0601430.0572800.00140.0561600.0640910.04210.0841490.05961010.0480.0321530.0612.試驗結(jié)果概率次品0.06正品0.94.試驗結(jié)果頻數(shù)頻率國徽向上361240.5011國徽向下359640.4989樣本（容量72088）頻率分布試驗結(jié)果概率國徽向上0.5國徽向下0.5總體分布.次品正品試驗結(jié)果0.93880.0612頻率.從規(guī)定尺寸為25.40mm的一堆產(chǎn)品中任取100件，測得它們的實際尺寸如下：25.3925.3625.3425.4225.4525.3825.3925.4225.4725.3525.4125.4325.4425.4825.4525.4325.4625.4025.5125.4525.4025.3925.4125.3625.3825.3125.5625.4325.4025.3825.3725.4425.3325.4625.4025.4925.3425.4225.5025.3725.3525.3225.4525.4025.2725.4325.5425.3925.4525.4325.4025.4325.4425.4125.5325.3725.3825.2425.4425.4025.3625.4225.3925.4625.3825.3525.3125.3425.4025.3625.4125.3225.3825.4225.4025.3325.3725.4125.4925.3525.4725.3425.3025.3925.3625.4625.2925.4025.3725.3325.4025.3525.4125.3725.4725.3925.4225.4725.3825.39請問：（1）這個問題的“總體”是什么？（2）如何處理這些數(shù)據(jù)？即如何估計這個問題的“總體分布”？.分組個數(shù)累計頻數(shù)頻率[25.235,25.265)一10.01[25.265,25.295)┰20.03[25.295,25.325)正50.05[25.325,25.355)正正┰120.12[25.355,25.385)正正正下180.18[25.385,25.415)正正正正正250.25[25.415,25.445)正正正一160.16[25.445,25.475)正正下130.13[25.475,25.505)40.04[25.505,25.535)丅20.02[25.535,25.565)丅20.02合計

1001.00第六步，列出頻率分布表。第六步，列出頻率分布表。分組個數(shù)累計頻數(shù)頻率[25.235,25.265)一10.01[25.265,25.295)┰20.03[25.295,25.325)正50.05[25.325,25.355)正正┰120.12[25.355,25.385)正正正下180.18[25.385,25.415)正正正正正250.25[25.415,25.445)正正正一160.16[25.445,25.475)正正下130.13[25.475,25.505)40.04[25.505,25.535)丅20.02[25.535,25.565)丅20.02合計

1001.00正.25.23525.29525.35525.41525.47525.535產(chǎn)品尺寸(mm）頻率分布直方圖.25.23525.29525.35525.41525.47525.535產(chǎn)品尺寸(mm）總體密度曲線.為了了解一大片經(jīng)濟樹林的生長情況，隨機測量其中的100株的底部周長，得到如下數(shù)據(jù)表（長度單位：cm）135981021109912111096100103125971171131109210210910411210912487131971021231041041281051231111031059211410810410212912697100115111106117104109111891101218012012110410811812999909912112310711191100991011169710210810195107101102108117991181061199712610811998