Measuring a small number of samples, and the 3v fallacy: Shedding light on confidence and error intervals

被引:31
作者
Schmid, Hanspeter [1 ]
Huber, Alex [1 ]
机构
[1] Institute of Microelectronics, University of Applied Sciences Norhtwestern Switzerland, Windisch
来源
IEEE Solid-State Circuits Magazine | 2014年 / 6卷 / 02期
关键词
Timing circuits;
D O I
10.1109/MSSC.2014.2313714
中图分类号
学科分类号
摘要
Many solid-state circuits papers today report the mean and the standard deviation of measurement results obtained from a small number of test chips and then compare them with numbers other authors obtained. Almost none of them discuss confidence intervals, ranges of values for that standard deviation within which the true value lies with a certain probability. Many implicitly assume that the range would contain all but 0.27% of chip samples to be expected in volume production. This is incorrect even if it is certain that the measured quantity is exactly normal distributed. © 2014 IEEE.
引用
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页码:52 / 58
页数:6
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