請問96年統計學大意第22、38題,謝謝 - 考試

By Kyle
at 2014-01-07T13:42
at 2014-01-07T13:42
Table of Contents
不好意思,因為我不是很強,觀念以點弱,所以有一些很簡單的問題不懂,
雖然我很怕讓人笑掉大牙,可是考試近在眼前,我決定豁出去了,
請各位前輩們不吝指導,謝謝。
1.96年第22題
簡單線性迴歸分析的統計報表中,若「判定係數」(coefficient of determination)
R^2 接近1,第3個選項 迴歸線的斜率接近+1 或-1
考選部答案: 正確
我的想法:
判定係數接近1,不是只能確定有直線關係,
斜率不一定會是 +1或-1吧,好像有點怪怪的。
2.96年第38題
在檢定時,.......(因為很多數學符號無法標示),若增加樣本數,選項1:「型Ⅰ錯誤」
機率會下降 選項2:「型Ⅱ錯誤」機率會下降
考選部答案為 選項2正確
我的想法:
樣本數增加,應該「型Ⅰ錯誤」、「型Ⅱ錯誤」機率會同時下降,我有查到書上解釋為:
在檢定時「型Ⅰ錯誤」機率(即顯著水準)為一定值,因此在一顯著水準下,增加樣本數只
會使得「型Ⅱ錯誤」機率會下降。我個人是覺得這樣的解釋有點....不是很滿意
麻煩各位前輩了
--
Tags:
考試
All Comments

By Kristin
at 2014-01-09T05:17
at 2014-01-09T05:17

By Tristan Cohan
at 2014-01-12T07:19
at 2014-01-12T07:19

By Ursula
at 2014-01-13T20:14
at 2014-01-13T20:14

By Iris
at 2014-01-17T21:29
at 2014-01-17T21:29

By Hamiltion
at 2014-01-19T07:59
at 2014-01-19T07:59

By Carol
at 2014-01-20T22:44
at 2014-01-20T22:44

By Andy
at 2014-01-23T02:10
at 2014-01-23T02:10

By Carol
at 2014-01-25T12:53
at 2014-01-25T12:53

By Robert
at 2014-01-27T01:13
at 2014-01-27T01:13

By Joe
at 2014-01-27T10:06
at 2014-01-27T10:06

By Caroline
at 2014-01-30T18:25
at 2014-01-30T18:25

By Enid
at 2014-01-31T21:09
at 2014-01-31T21:09

By Barb Cronin
at 2014-02-02T19:30
at 2014-02-02T19:30

By Edith
at 2014-02-07T11:57
at 2014-02-07T11:57

By Xanthe
at 2014-02-11T00:57
at 2014-02-11T00:57

By Brianna
at 2014-02-14T20:09
at 2014-02-14T20:09

By Poppy
at 2014-02-16T18:09
at 2014-02-16T18:09

By Sierra Rose
at 2014-02-21T00:30
at 2014-02-21T00:30

By Andy
at 2014-02-23T13:44
at 2014-02-23T13:44
Related Posts
中華電信 電機工程

By Ida
at 2014-01-07T10:17
at 2014-01-07T10:17
行政法申論解題

By Michael
at 2014-01-07T08:33
at 2014-01-07T08:33
請教中龍鋼鐵-電機是每年都有開缺嗎?

By Una
at 2014-01-07T02:28
at 2014-01-07T02:28
102年部分會研所考試入學數據分享

By Victoria
at 2014-01-07T01:24
at 2014-01-07T01:24
詢問四等書記官民法用書

By Oliver
at 2014-01-06T23:48
at 2014-01-06T23:48