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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大意是我們做研究時，寄出至少三份mail，每份mail裡問卷內容都一樣
我想請問的是，左邊四行的意思是什麼?
僅有回寄的第一、二、三封信?
還是
有寄回 一封 兩封 三封
那第四行的意思是?? 看不懂~.~
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