回答(1)
ES2023-04-03 13:49:29
同学,你好
题干中
1.“an expected value equal to the population volatility ”——unbiased
2.“increasing his sample size will decrease the sampling error for this statistic”——Consistency
Unbiased—— the expected value of the estimator should equal to the parameter of population.
Consistency requires that the accuracy of the parameter estimate increases and so many finite sample bias must diminish as the sample size increases
加油,祝你顺利通过考试~
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