data資料degree of confidence可信度,置信度degree of dispersion離散程度degree of freedom自由度degree of variation變異度dependent variable應(yīng)變量design of experiment實驗設(shè)計deviation from the mean離均差diagnose accordance rate診斷符合率difference with significance差別不顯著difference with significance差別顯著discrete variable離散變量dispersion tendency離中趨勢distribution分布、分配