[{"data":1,"prerenderedAt":47},["ShallowReactive",2],{"q-sw-106-1-research-methods-003":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-106-1-社會工作研究方法-003","sw-106-1-research-methods-003",106,1,false,3,"皮爾森相關係數（r）有幾個特色，下列敘述何者錯誤？",{"A":15,"B":16,"C":17,"D":18},"相關係數為零表示兩個變項間可能沒有關係","相關係數為正值表示正相關","相關係數介於-1 與+1 之間","相關係數有單位","D",null,[],"本題考點是皮爾森積差相關係數（Pearson r）的性質。依統計學對 r 的定義，r 為共變數除以兩變項標準差乘積所得的標準化統計量，其值介於 -1 與 +1 之間（C 正確），正值表示正相關、負值表示負相關（B 正確），且因計算中單位相互抵銷，r 本身沒有單位，故 D「相關係數有單位」為錯誤敘述，依題意選 D。A 敘述正確且用語謹慎——r 為零僅表示兩變項間沒有「線性」關係，仍可能存在曲線等非線性關係，故說「可能沒有關係」並無錯誤。",[24,27,31,35,39,43],{"webId":25,"stem":26,"number":10,"year":9,"session":10},"sw-106-1-research-methods-001","什麼是社會工作研究的第一步？",{"webId":28,"stem":29,"number":30,"year":9,"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":32,"stem":33,"number":34,"year":9,"session":10},"sw-106-1-research-methods-004","關於信效度的說明，下列何者正確？",4,{"webId":36,"stem":37,"number":38,"year":9,"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":40,"stem":41,"number":42,"year":9,"session":10},"sw-106-1-research-methods-006","關於演繹法的說明，何者有誤？",6,{"webId":44,"stem":45,"number":46,"year":9,"session":10},"sw-106-1-research-methods-007","當資料呈現正偏態（positively skewed）時，下列敘述何者正確？",7,1784109469867]