作者magic66 (马吉星)
站内NTUE_Nse97
标题[分析]课本後面的答案
时间Sun Oct 29 16:58:57 2006
6-11
Sy CV y
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(a) 0.0065 0.18% -3.70(正负0.01)
(b) 0.11 0.7% 15.8(正负0.1)
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6-13
2.2(正负0.1)*10^5 L
6-17
(a)
Sample Mean Standard Deviation
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1 5.12 0.08
2 7.11 0.12
3 3.99 0.12
4 4.74 0.10
5 5.96 0.11
───────────────────────────
(b)
S pooled=0.11%
(c)
Spooled is a weighted average of the individual estimates ofσ.
It use all the data from the five samples.The reliability of s improves
with the number of results.
6-19
Spooled=0.29%
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※ 编辑: magic66 来自: 210.240.186.33 (10/29 17:03)
1F：推 GrevenHsun:多谢拉! 10/29 18:40