mean
举一反三
- 【单选题】X 线平均波长( λ mean )与最短波长( λ min )的关系是 A. λ mean=3 λ min B. λ mean=2.5 λ min C. λ mean=2 λ min D. λ mean=1.5 λ min E. λ mean= λ min
- Whatdoes"whatisshortandsharp"mean?Whatdoes"whatislongandtough"mean?
- The difference between the sample mean and the population mean is called the sampling error.
- mean
- 54. This is ____ to an end. A: means B: a mean C: a means D: some mean