The results of the survey are ______ and useful despite being from a small sample.
举一反三
- A sample in which the characteristics of the sample are the same as those of the population is a(n): （ ） A: attributes sample. B: variables sample. C: random sample. D: representative sample.
- A<br/>sample in which the characteristics of the sample are the same as<br/>those of the population is a ( ) A: variables<br/>sample. B: representative<br/>sample. C: attributes<br/>sample. D: random<br/>sample.
- An analyst does research about sampling and estimation. With respect to statistical analysis, a sample statistics is least described as: A: the set of rules used to select a sample. B: quantity computed from a sample. C: descriptive measure of a sample.
- A researcher wants to estimate the difference in the means of two populations. A random sample of 36 items from the first population results in a sample mean of 430. A random sample of 49 items from t
- The results __________ from the survey (调查). A: take B: was taken C: were taken D: took