数 学 精 品 课 件北 师 大 版13598102 11099121 11096100 10312597117 113 11092102 109 104 112109 1248713197102 123 104 104 128105 123 111 103 10592114 108 104 102129 12697100 115111 106 117 104 10911189110 12180120 121 104 108 118129999099121 123 107 1119110099101 11697102 108 10195107 101102 108 11799118 106 11997126 108123 11998121 101 113 102 103 104 108底部周长分组底部周长分组(xi)/cm频数频数(ni)频率频率(fi)80,85)10.010.00285,90)20.020.00490,95)40.040.00895,100)140.140.028100,105)240.240.048底部周长分组底部周长分组(xi)/cm频数频数(ni)频率频率(fi)105,110)150.150.030110,115)120.120.024115,120)90.090.018120,125)110.110.022125,130)60.060.012130,13520.020.004组别组别频数频数频率频率145.5149.510.02149.5153.540.08153.5157.5200.40157.5161.5150.30161.5165.580.16165.5169.5mn合计合计MN机床甲机床甲109.81010.2机床乙机床乙10.1109.910天数天数151180181210211240241270271300301330331360361390日光日光灯数灯数1111820251672“层级二层级二层级二层级二 应试能力达标应试能力达标应试能力达标应试能力达标”见见见见“课时跟踪检测课时跟踪检测课时跟踪检测课时跟踪检测( (六六六六)” )” ( (单击进入电子文档单击进入电子文档) )