Pseudorandom Sampling has a Real Effect on Test Size
作者:
JeffreyH. Dorfman,
期刊:
The American Statistician
(Taylor Available online 1996)
卷期:
Volume 50,
issue 2
页码: 151-155
ISSN:0003-1305
年代: 1996
DOI:10.1080/00031305.1996.10474363
出版商: Taylor & Francis Group
关键词: Nonrandom sampling;Power;Test size;Truncated sampling
数据来源: Taylor
摘要:
A dangerous trend toward nonrandom sampling mechanisms has been observed in several fields of the applied sciences. These sampling designs are attempts to avoid tail observations, resulting in smaller estimated standard errors and inflated claims of statistical significance. Often, the researchers go to some lengths to make the sampling mechanisms appear random; yet, they clearly are not. The effect of these pseudorandom sampling designs on the power and size of the hypothesis tests is investigated and shown to be substantial.
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