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25.39 25.36 25.34 25.42 25.45 25.38
25.39 25.42 25.47 25.35 25.41 25.43
25.44 25.48 25.45 25.43 25.46 25.40
25.51 25.45 25.40 25.39 25.41 25.36
25.38 25.31 25.56 25.43 25.40 25.38
25.37 25.44 25.33 25.46 25.40 25.49
25.34 25.42 25.50 25.37 25.35 25.32
25.45 25.40 25.27 25.43 25.54 25.39
25.45 25.43 25.40 25.43 25.44 25.41
25.53 25.37 25.38 25.26 25.44 25.40
25.36 25.42 25.39 25.46 25.38 25.35
25.31 25.34 25.40 25.36 25.41 25.32
25.38 25.42 25.40 25.33 25.37 25.41
25.49 25.35 25.47 25.34 25.30 25.39
25.36 25.46 25.29 25.40 25.37 25.33
25.40 25.35 25.41 25.37 25.47 25.39
25.42 25.47 25.38 25.39.
(1)列出这个样本的频率分布表;
(2)画出频率分布直方图;
(3)如果产品的实际尺寸与规定尺寸的误差不超过±0.075 mm就认为合格,估计这批产品的合格率.
查看习题详情和答案>>
某钢铁加工厂生产内径为25.40mm的钢管,下面的数据是一次抽样中的100件钢管的内径尺寸(单位:mm):
|
25.39 |
25.36 |
25.34 |
25.42 |
25.45 |
25.38 |
25.39 |
25.42 |
25.47 |
25.35 |
|
25.41 |
25.43 |
25.44 |
25.48 |
25.45 |
25.43 |
25.46 |
25.40 |
25.51 |
25.45 |
|
25.40 |
25.39 |
25.41 |
25.36 |
25.38 |
25.31 |
25.56 |
25.43 |
25.40 |
25.38 |
|
25.37 |
25.44 |
25.35 |
25.46 |
25.40 |
25.49 |
25.34 |
25.42 |
25.50 |
25.37 |
|
25.35 |
25.32 |
25.45 |
25.40 |
25.27 |
25.43 |
25.54 |
25.39 |
25.45 |
25.43 |
|
25.40 |
25.43 |
25.44 |
25.41 |
25.53 |
25.37 |
25.38 |
25.24 |
25.44 |
25.40 |
|
25.36 |
25.42 |
25.39 |
25.46 |
25.38 |
25.35 |
25.31 |
25.34 |
25.40 |
25.36 |
|
25.41 |
25.32 |
25.38 |
25.42 |
25.40 |
25.33 |
25.37 |
25.41 |
25.49 |
25.35 |
|
25.47 |
25.34 |
25.30 |
25.39 |
25.36 |
25.46 |
25.29 |
25.40 |
25.37 |
25.33 |
|
25.40 |
25.35 |
25.41 |
25.37 |
25.47 |
25.39 |
25.42 |
25.47 |
25.38 |
25.39 |
(1)画出其频率分布直方图.
(2)若规定,钢管内径的尺寸在区间[25.325,25.475)内为优等品,求优等品所占的比例.
查看习题详情和答案>>某钢铁加工厂生产内径为
25.40mm的钢管,下面的数据是一次抽样中的100件钢管的内径尺寸(单位:mm):|
25.39 |
25.36 |
25.34 |
25.42 |
25.45 |
25.38 |
25.39 |
25.42 |
25.47 |
25.35 |
|
25.41 |
25.43 |
25.44 |
25.48 |
25.45 |
25.43 |
25.46 |
25.40 |
25.51 |
25.45 |
|
25.40 |
25.39 |
25.41 |
25.36 |
25.38 |
25.31 |
25.56 |
25.43 |
25.40 |
25.38 |
|
25.37 |
25.44 |
25.35 |
25.46 |
25.40 |
25.49 |
25.34 |
25.42 |
25.50 |
25.37 |
|
25.35 |
25.32 |
25.45 |
25.40 |
25.27 |
25.43 |
25.54 |
25.39 |
25.45 |
25.43 |
|
25.40 |
25.43 |
25.44 |
25.41 |
25.53 |
25.37 |
25.38 |
25.24 |
25.44 |
25.40 |
|
25.36 |
25.42 |
25.39 |
25.46 |
25.38 |
25.35 |
25.31 |
25.34 |
25.40 |
25.36 |
|
25.41 |
25.32 |
25.38 |
25.42 |
25.40 |
25.33 |
25.37 |
25.41 |
25.49 |
25.35 |
|
25.47 |
25.34 |
25.30 |
25.39 |
25.36 |
25.46 |
25.29 |
25.40 |
25.37 |
25.33 |
|
25.40 |
25.35 |
25.41 |
25.37 |
25.47 |
25.39 |
25.42 |
25.47 |
25.38 |
25.39 |
(1)
画出其频率分布直方图.(2)
若规定,钢管内径的尺寸在区间[25.325,25.475)内为优等品,求优等品所占的比例. 查看习题详情和答案>>