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一、趋势检验方法简介,2×C表线性回归显著性检验x~2值的方法,又称百分率(比)趋势的显著性检验方法,它适用于等级型(半计量)资料,以检验百分率(比)呈现递增(减)趋势时有否显著意义。按照潘宝骏氏介绍的计算方法和公式[1],对于等级型资料均需对等级加以评分(H)。H是根据例题所给予的条件而决定的。运算时用各个H的绝对数先与例题Ⅰ组的相应绝对数,再与例题Ⅱ组的相应绝对数分两次进行统计模式计算(Statistical Calculation mode),分别计算出n_1,∑X_1、∑X_1~2;n_2、∑X_2∑X_2~2;N、∑X、∑X~2(见表1),最后将上述有关数值代入公式Ⅰ或公式Ⅱ。
First, the introduction of trend test method, 2 × C table linear regression significance test x ~ 2 value method, also known as the percentage (ratio) trend of significance test method, it applies to the level (semi-measurement) data to test the percentage (Ratio) showed increasing (decreasing) the trend of significant significance. According to Pan Po Chun introduced the calculation methods and formulas [1], for grade-level information to be rated on the grade (H). H is determined by the conditions given in the example. When calculating with the absolute number of each H first with the corresponding absolute number of cases of group Ⅰ, and then with the corresponding absolute number of group Ⅱ two statistical statistical mode (Statistical Calculation mode), were calculated n_1, ΣX_1, ΣX_1 ~ 2; n_2, ΣX_2ΣX_2 ~ 2; N, ΣX, ΣX ~ 2 (see Table 1). Finally, the above numerical values are substituted into formula I or formula II.