R的命令檔放在這邊
https://docs.google.com/document/d/1tphSeYBPWrgjmeQ3YS-abI37Xk73A1xGMXpiJtI6teg/edit?usp=sharing
分析的讀卡檔必須是utf8(無BOM)的文字檔,格式如下圖。如果是用windows的,用notepad++來處理文字檔比較保險。因為內建的記事本,會幫文字檔加入BOM,用R處理時就會發生錯誤。
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjoNPFs31xELfKIYn4_rCC5UMpNpL1t7dN96wFpaNjSSqfGAe5eA_3oBKawjeLG-pRWDxtC3NVN94IZIKXHz7VD9Orrs0KGMXupd70l15q3A04kZTIjNkZhtnlg2FsM3x3BK-BV/s640/000%25E8%25A9%25A6%25E9%25A1%258C%25E7%25AF%2584%25E4%25BE%258B.png)
可產出的圖表如下,直接做出成績分佈圖,還有全年級的成績盒鬚圖,紅線代表的是全部應試者的平均分數
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjKbuR8cEoMibzCk4oZIxuWJmanSTXVaU3rBMlyp5oCT6IFGpZabNt459uJAD3uixxfIbdr-2vN40bbKGMOPRRquwK_cuFwTqWIwC8FbFONN3g4VMLkrMqXm-FvDBOrLpQN6eaj/s400/%25E6%2588%2590%25E7%25B8%25BE%25E5%2588%2586%25E6%259E%2590_%25E6%259F%2590%25E6%259F%2590_%25E6%2588%2590%25E7%25B8%25BE%25E5%2588%2586%25E4%25BD%2588%25E5%259C%2596.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDrnqs1OXC3wmqNQUvgYlTN8bUjK4-8YsUhHVYQs72-8I4i5mAeVjuHWtxTtdK_lMIL0gABhe0SbT9wuBgw72U2DR6doVa74rCz_eFfSzfQy5n7iwC2l8IH1CHaD5bPUPNkM23/s400/%25E6%2588%2590%25E7%25B8%25BE%25E5%2588%2586%25E6%259E%2590_%25E6%259F%2590%25E6%259F%2590_%25E5%2585%25A8%25E5%25B9%25B4%25E7%25B4%259A.png)
對個別班級或學生有用的是「學生問題分析圖」,也就是SP Table(或叫做SP chart),可以看出那些題目是難題、易題,哪些學生有可能粗心,並且可以直接提供學生作為學習參考。
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKKkPFYkas0aRx9CGX55TjNy_hIH9_D-nT13jW4jSVCxwQulcsZ40zkxcFYYrds0y2htwfsKrxowqlIFdCBpqV2PPqkq15OYkvr_HkoUux7s6U5RFmkW8X6Tpj0yKctaKfTLpR/s640/%25E5%25AD%25B8%25E7%2594%259F%25E5%2588%2586%25E6%259E%2590%25E5%259C%2596%25E6%259F%2590%25E6%259F%2590%25E7%25A7%25911%25E7%258F%25AD.png)
針對題目的分析,可以看這幾個圖,能夠看出哪些題目的難度低、鑑別度低或是注意係數偏高,然後再針對這些問題作質性討論。
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjhzJrMRoAhXagox132KvdGzCILpQdPCgG2wvODN9stl-v-zscL0eCyFp5e9Mxuly4D32g5aIiLZiZd33gp51QBkc4D3yfwOWXrNVzvETJ0KuIYisNU9o5-NeQEl0-JmqXeSpwg/s640/%25E5%2595%258F%25E9%25A1%258C%25E5%2588%2586%25E6%259E%2590_%25E6%259F%2590%25E6%259F%2590_%25E9%259B%25A3%25E5%25BA%25A6%25E9%2591%2591%25E5%2588%25A5%25E5%25BA%25A6%25E5%2595%258F%25E9%25A1%258C%25E6%25B3%25A8%25E6%2584%258F%25E4%25BF%2582%25E6%2595%25B8.png)
以左上的難度圖來說,高的線段就是簡單的,所以學生作答時應該會覺得輕鬆容易,低的線段就是難的,學生作到那邊時就會得很沮喪吧。所以這張組圖應該就是視覺化呈現學生作答時的心路歷程吧。左下的則是把所有題目依難度高低排序出來,以這份題目來說,絕大部分的難度都是高於0.5。
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEieiQsolSQS1giZPXgbPrd5S5TVboleNfF-dARKGuwYYJBPIqNPM-Z7dxd2wXxb0zcIqtvVxYx58SjzePO9FHNvS817wDDKD-kBliG0isXByCPxwb_BgG1RgBWhPlHJXOZL-R9L/s640/%25E5%2595%258F%25E9%25A1%258C%25E5%2588%2586%25E6%259E%2590_%25E6%259F%2590%25E6%259F%2590_%25E9%259B%25A3%25E5%25BA%25A6%25E8%2588%2587%25E9%2591%2591%25E5%2588%25A5%25E5%25BA%25A6.png)
通過率和難度算法不太一樣,通過率就是全部應試者答對該題的比率,難度則是用高分組和低分組的答對率相加除以2。不過兩者呈現的趨勢其實差不多就是了(高分組和低分組都是用25%去計算)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh6PwrdR0mfF-aX2KwddmbzTQrmkjUc4rgh6dpfkovrJXbZbQOJR6zl2BISQjzPGJq93knKMHj8CyD79Ot_fVwM8AIhdtcPiEMcz5O6U8V7D5SGe4TV5WxW9jA4vvNminJj8KlB/s640/%25E5%2595%258F%25E9%25A1%258C%25E5%2588%2586%25E6%259E%2590_%25E6%259F%2590%25E6%259F%2590%25E9%2580%259A%25E9%2581%258E%25E7%258E%2587.png)
除了這些以外,內部還有一些數據分析的文字檔可以作為試題分析的參考。