作者chrisjon (恬静悠闲)
看板Statistics
标题[问题] 原文书的一些资料的问题
时间Sat Nov 10 15:41:23 2007
number of % of Average Number of
Growers Population Fruit Trees
per Grower
Response to first mailing
Response to second mailing
Response to third mailing
Nonrespondents after 3 mailings
Total population
Tree successive mailings of the same questionnaire were sent to growers
For one of the questions - number of fruit trees - complete data
were available for the population(Finkner, 1950)
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大意是我们做研究时，寄出至少三份mail，每份mail里问卷内容都一样
我想请问的是，左边四行的意思是什麽?
仅有回寄的第一、二、三封信?
还是
有寄回 一封 两封 三封
那第四行的意思是?? 看不懂~.~
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