31. http://www.semsoeasy.com.tw/
Reviewer opinion
•You have two datasets –302 from bank sales personnel and 611 from customers. What is not clear is how these two datasets were used. Were they combined? If yes, where they checked for consistency or similarities? If the data sets were not similar then they should not be combined. However, if the datasets were not combined, then I don’t see any evidence of these being treated differently.
37. http://www.semsoeasy.com.tw/
樣本大小決定
• 經驗:以問卷中最大的構面中的題項數目
為主,以5~20倍為抽樣數目,依母體大
小決定之(multivariate data analysis,
5th ed., Hair, Jr. et al., p.98~99)。
• 計算:
2 2
2
1.96 s
n
e
2
2
1.96 p(1 p)
n
e
92. http://www.semsoeasy.com.tw/
Sobel Test (1982)
http://www.danielsoper.com/statcalc3/calc.aspx?id=31
• Sobel 檢驗統計量
• a與b均為非標準化係數值
• a×b等值於c-c’
• SEa及SEb分別為a與b之標準誤
• 在α=0.05下,z值>|1.96︱即為顯著
2 2 2 2
ab b a SE a SE b SE
/ ab z ab SE
Sobel, M. E. (1982). Asymptotic intervals for indirect effects in structural equations models.
In S. Leinhart (Ed.), Sociological methodology 1982 (pp.290-312). San Francisco: Jossey-Bass.
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多重比較(事後比較)
•Duncan
–類似於S-N-K,但比較寛鬆, 比較群組愈多愈容易顯著。
•Games-Howell method
–使用於群組間N不相等,異質性及非常態, 是蠻新的檢定法且結果具強靭性。
•Dunnett檢定
–所有群組均與控制組平均數比較
Hilton A & Armstrong R A (2006) Is one set of data more variable than another? Microbiologist Vol. 7: No.2 34-36 (June 2006)