在 "小马哥课堂 统计学 中心极限定理" 一节的例子中提到一个标准误差的概念，有同学对此不清楚，所以这里单独写一节，来对standard error进行阐述，希望能大家能有一个直观的理解。 Standard error(标准误差) The standard error (SE) of a stati Read More
Central limit theorem(中心极限定理) the central limit theorem (CLT) establishes that, in some situations, when independent random variables are added, their Read More
histogram A histogram is an accurate representation of the distribution of numerical data. It is an estimate of the probability distribution of a cont Read More