of the time的意思

2015-05-24 1:19 am
http://onlinestatbook.com/2/estimation/mean.html

Figure 1 shows that 95% of the means are no more than 23.52 units (1.96 standard deviations) from the mean of 90. Now consider the probability that a sample mean computed in a random sample is within 23.52 units of the population mean of 90. Since 95% of the distribution is within 23.52 of 90, the probability that the mean from any given sample will be within 23.52 of 90 is 0.95. This means that if we repeatedly compute the mean (M) from a sample, and create an interval ranging from M - 23.52 to M + 23.52, this interval will contain the population mean 95% "of the time". In general, you compute the 95% confidence interval for the mean with the following formula:

請問上文of the time的意思

回答 (4)

2015-05-24 6:06 am
✔ 最佳答案

用念的就順了.

... will contain the population mean '95 percent of the time'.

如果還感覺不出來: 比較這一句,

will contain the population mean most of the time.

95% 只是量化而已.
2015-05-24 3:11 am
2015-05-24 2:09 pm
樓上的CK知事長:您所貼的連結是另一種用法,與此處完全不符. Beth的回答才是正確的.
2015-05-24 5:38 am
of the time
在時間


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