[{"data":1,"prerenderedAt":48},["ShallowReactive",2],{"q-sw-107-2-research-methods-007":3},{"subject":4,"subjectSlug":5,"subjectFullName":4,"question":6,"related":24},"社會工作研究方法","research-methods",{"id":7,"webId":8,"year":9,"session":10,"subject":4,"legacy":11,"number":12,"stem":13,"options":14,"answer":19,"answerNote":20,"images":21,"lawTimestamp":9,"explanation":22,"freq":23},"sw-107-2-社會工作研究方法-007","sw-107-2-research-methods-007",107,2,false,7,"情況：睡眠對健康至關重要。但研究發現，多數大學生睡眠品質不佳。葉教授想了解影響大學生睡眠品質的因素，他從自己任教的大學裡，以系級名單隨機抽取 20 個班級，到這些班級發放問卷，請全班同學填寫。問卷中，睡眠品質以「匹茲堡睡眠品質量表」（是由 7 題，每題 4 點尺度的李克特（Likert）量表所構成，分數越高代表睡眠品質越差）來測量，其他變項包括受訪者性別、每週運動時數、每天上網時數等。研究發現，「每天上網時數」與「睡眠品質」的相關係數 pearson r = 0.64（p=.002）。若顯著水準 α=0.05，以下敘述何者正確？",{"A":15,"B":16,"C":17,"D":18},"「每天上網時數」與「睡眠品質」具有因果關係，兩者間的因果關係達統計上的顯著","「每天上網時數」與「睡眠品質」，兩者相關達統計上的顯著","「每天上網時數」和「睡眠品質」，沒有顯著相關","「每天上網時數」可以解釋「睡眠品質」64%的變異量","B",null,[],"本題考點是「統計顯著性」與「相關」的正確解讀。判斷相關是否顯著，看 p 值與 α 的比較：本題 p=.002 小於 α=0.05，代表兩變項相關在統計上達顯著，故選 B。A 錯在把相關當因果，Pearson 相關只呈現共變程度，不能推論因果方向。C 錯在方向相反，p=.002 遠小於 .05，明明就顯著，不能說沒有顯著相關。D 錯在把相關係數 r 誤當成可解釋變異量：可解釋變異量是決定係數 r²，r=0.64 時 r²≈0.41，即約 41%，而非 64%。",1,[25,29,32,36,40,44],{"webId":26,"stem":27,"number":23,"year":28,"session":23},"sw-106-1-research-methods-001","什麼是社會工作研究的第一步？",106,{"webId":30,"stem":31,"number":10,"year":28,"session":23},"sw-106-1-research-methods-002","執行研究是為了解概念，但我們仍得在研究前，針對概念給予基本描述與簡要定義。請問這個步驟是：",{"webId":33,"stem":34,"number":35,"year":28,"session":23},"sw-106-1-research-methods-003","皮爾森相關係數（r）有幾個特色，下列敘述何者錯誤？",3,{"webId":37,"stem":38,"number":39,"year":28,"session":23},"sw-106-1-research-methods-004","關於信效度的說明，下列何者正確？",4,{"webId":41,"stem":42,"number":43,"year":28,"session":23},"sw-106-1-research-methods-005","當我們要判斷兩個變項間是否有因果關係時，下列那種判斷標準不合適？",5,{"webId":45,"stem":46,"number":47,"year":28,"session":23},"sw-106-1-research-methods-006","關於演繹法的說明，何者有誤？",6,1784109493520]