[英中] 請教期刊一段解釋
The required sample size was determined using the
pooled estimate of within-group standard deviations obtained from
data reported in a recent article.
我大概知道他的意思 不過不知道怎麼翻pooled estimate of within-group
standard deviations 有誰知道嗎 感激不盡！！
另外
Power calculations indicated that a sample of more than
36 participants would provide an 80% (貝它=0.20) chance of
detection of a 20% (阿法=0.05) difference in improvement
between group.
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