The summary() obviously also displays this information, but not in a way directly usable in other computations. Let's start out by finding a few more very basic statistical properties of this data
summary()显然也会显示这一信息，不过不直接用于其他计算中。
Educators and learners interested in finding out more about MIT OCW are encouraged to attend several upcoming educational and information technology conferences.
许多关心并在麻省理工开放式课程发掘更多的教育者与学习者被鼓励参与许多即将来临的教育与资讯技术的研讨会。
Educators and learners interested in finding out more about MIT OCW are encouraged to attend several upcoming educational and information technology conferences.
许多关心并在麻省理工开放式课程发掘更多的教育者与学习者被鼓励参与许多即将来临的教育与资讯技术的研讨会。
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