Bivariate score frequencies on two 20-items mathematics tests.
两个20项数学测验上的得分频率二元。
译者:生物统计家园网 机器人LoveR
描述----------Description----------
The data set contains the bivariate sample frequencies of number-right scores for two parallel 20-items mathematics tests given to a sample from a national population of examinees. This data has been described and analized by Holland and Thayer (1989); Von Davier et al, (2004).
该数据集包含的二元采样频率的两个平行的20项数学的抽样测试考生从一个国家的人口数量合适的分数。此数据已经描述和analized的荷兰和Thayer(1989),冯Davier等,(2004)。
用法----------Usage----------
data(Math20SG)
格式----------Format----------
A 21x21 matrix containing the bivariate sample frequencies for X (raws) and Y (columns)
一个21X21的矩阵包含的二元采样频率的X(原糖)和Y(列)
参考文献----------References----------
(Technical Report No 89-84). Princeton, NJ: Educational Testing Service.
New York, NY: Springer-Verlag.