The fraction of a sample possessing a certain trait is called a:
A: proportion.
B: population.
C: mean.
D: confidence interval.
A: proportion.
B: population.
C: mean.
D: confidence interval.
举一反三
- 中国大学MOOC: The fraction of a sample possessing a certain trait is called a:
- The larger the level of confidence used in constructing a confidence interval estimate of the population mean, the narrower the confidence interval.
- The difference between the sample mean and the population mean is called the: A: population deviation. B: population standard deviation. C: standard error of the mean. D: sampling error.
- Under<br/>a certain confidence level, with the mean as the center, the<br/>reliability range including the population average is called () A: confidence<br/>level B: degree<br/>of freedom C: precision D: confidence<br/>interval
- So-called “95% confidence interval for population mean” is applied to estimate the location of population mean, with a confidence level 95%.