【单选题】下列关于关键词的叙述中,哪项是错误的()。
【简答题】Last summar, my sister and I took a camping trip in the Rocky Mountains. It was a wonderful experience. Every morning, we _______ wake up to the sound of singing birds. During the day, we ______ hike ...
【简答题】A realtor in a local area is interested in being able to predict the selling price for a newly listed home or for someone considering listing their home. This realtor would like to attempt to predict...
【单选题】5G即第五代移动通信技术,是超越4G的 一个大的标准体系,其中一部分技术需要基于当前技术的演进,另一部分则是相对更加革命性的技术,这两部分技术相辅相成,从而实现了一个无缝的升级。可见( ) 1发展的实质是事物的前进和上升 2新事物从一开始就比旧事物更强大 3后出现的事物才是真正的新事物 4新事物在旧事物的母体中孕育产生
【简答题】抽样误差是指随机抽样调查中()和()之间的差异。
【判断题】抽样误差是指遵循随机抽样原则出现的不可避免的误差
【单选题】抽样误差是指用样本指标估计总体指标时产生的一种( )。