NO.PZ2024120401000009
问题如下:
An experiment yields the following data:
It is hypothesized that the data come from a uniform distribution, U(0, b). What are the unbiased estimators of the mean and variance?
选项:
A.0.39 0.08
B.0.45 0.086
C.0.39 0.086
D.0.45 0.086
解释:
The sample mean is already unbiased:
For the variance:
0.080是怎麼算出來的?