PsychStatsWiki

方法产生的原因：相比点估计，需要有更大的机会使估计准确

区间估计的定义：指明一个区间以及这个区间覆盖总体未知参数的概率的估计方法【相应的概率称为置信度1-α】。

置信度与置信区间的关系： 置信度越高，置信区间越宽。即对估计越有把握，估计就越不准确。

置信区间的一般公式：点估计 ± (临界值)(标准误)

Causes of the methodology：There needs to be a greater chance that the estimate would be more accurate than a point estimate.

The definition of interval estimates：An estimate that specifies an interval and the probability of the overall unknown parameter covered by this interval【The corresponding probability is called confidence level 1-α】。

The relationship between confidence level and confidence intervals： The higher the confidence level is, the wider the confidence interval will be. The higher the confidence level, the wider the confidence interval.

The general formula for confidence intervals：point estimate ± (critical value)(standard error)