[{"data":1,"prerenderedAt":48},["ShallowReactive",2],{"q-sw-107-1-research-methods-007":3},{"subject":4,"subjectSlug":5,"subjectFullName":4,"question":6,"related":23},"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":10},"sw-107-1-社會工作研究方法-007","sw-107-1-research-methods-007",107,1,false,7,"某研究算出決定係數(R )=.49，這代表下列何者？",{"A":15,"B":16,"C":17,"D":18},"70%的最後分數之變異已經被解釋","49%的最後分數之變異已經被解釋","7%的最後分數之變異已經被解釋","51%的最後分數之變異已經被解釋","B",null,[],"本題考點是決定係數(R²)的統計意義。依迴歸分析的定義,決定係數 R² 代表依變項(最後分數)的總變異中,可被自變項解釋的比例;R²=.49 即表示 49% 的變異已被解釋,故選 B。A 的 70% 是相關係數 r=.70 的數值,r 必須平方後才是解釋變異量,不能直接當作解釋力;C 的 7% 沒有任何統計換算依據,屬小數位誤讀的陷阱;D 的 51% 是 1−R²,即「未被解釋」的殘差變異比例,方向恰與題意相反。",[24,28,32,36,40,44],{"webId":25,"stem":26,"number":10,"year":27,"session":10},"sw-106-1-research-methods-001","什麼是社會工作研究的第一步？",106,{"webId":29,"stem":30,"number":31,"year":27,"session":10},"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：",2,{"webId":33,"stem":34,"number":35,"year":27,"session":10},"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":27,"session":10},"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":27,"session":10},"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":27,"session":10},"sw-106-1-research-methods-006","關於演繹法的說明，何者有誤？",6,1784109483927]