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104 F Test 比較兩組Variance是否相等. 不同於 t test 與 Z testF test關心的是Variance而非Mean. Two tail F test. Ho σ1 σ2. H1 σ1 σ2. 8594; 查表 F U. Fα2, n1-1, n2-1 其中. N1 為sample 1 的 size. N2為sample 2 的 size. 8594; 查表 F L. 1Fα2, n2-1, n1-1. N18, n210, α0.05 雙尾檢定. Fα, n1-1, n2-1 F0.25,7,94.03. 1Fα2, n2-1, n1-1 1F0.25,9,7 14.82 0.207. 這一題課本查表時未將α除 2應該是錯誤 單尾檢定的道理想同只是查表時不需要將σ除2只需查F U. 標籤 Chap 10. 先進行將課本的數據key-in Minitabone-way ANOVA unstacked, comparison 選Tukey. 005 結論為 fail to reject Ho.CONTENT
This web page xstatistics.blogspot.com states the following, "不同於 t test 與 Z testF test關心的是Variance而非Mean." We saw that the webpage said " 8594; 查表 F U." It also said " Fα2, n1-1, n2-1 其中. N1 為sample 1 的 size. 8594; 查表 F L. 1Fα2, n2-1, n1-1. N18, n210, α0. Fα, n1-1, n2-1 F0. 1Fα2, n2-1, n1-1 1F0. 先進行將課本的數據key-in Minitabone-way ANOVA unstacked, comparison 選Tukey. 005 結論為 fail to reject Ho."