Methods To collect data by cluster sampling and analyze data by polychotomous Logistic regression.
方法采整群抽样
搜集资料,采
类回归
析筛选
响因素。
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Organizers and participants say what began in 1987 as a rather quirky challenge is now more relevant than ever As the car industry looks for efficiency in electric vehicle range, power and charging, We're sampling a world of viewer comments today.
组织者和参与者表示,1987 年开始的一项相当古怪的挑战现在比以往任何时候都更加重要。随着汽车行业寻求电动汽车续航里程、电力和充电的效率,我们今天大量观众评论进行了抽样调
。