问题
单项选择题
若收集了n组数据(xi,yi),i=1,2,…,n,为了解变量x与y间是否有相关关系,可以画______加以考察。
A.直方图
B.散布图
C.正态概率图
D.排列图
答案
参考答案:B
若收集了n组数据(xi,yi),i=1,2,…,n,为了解变量x与y间是否有相关关系,可以画______加以考察。
A.直方图
B.散布图
C.正态概率图
D.排列图
参考答案:B
选词填空,完成下列短文。 | |
we go to the ____________ to watch a movie, then we go to a ____________ to have lunch. In the afternoon, we go to the park. I like to ____________ kites, but my brother ____________ to play badminton with my father. We are a happy family. |