A:对 B:错 答案: 错 If the population distribution is unknown, in most cases the sampling distribution of the mean can be appr 点我阅读全文
A: the variance is not as accurate a measurement as the standard deviation B:the standard deviation has been corrected f 点我阅读全文
A:median, mean B:data point, mean C: quartile, median D:data point, median 答案: data point, mean The sum of the deviation 点我阅读全文