A Statistic is
A: equal to a parameter of the population.
B: an exact characteristic of the population.
C: an index calculated based on all data of the population.
D: obtained after studying all the individuals in the population.
E: calculated based on a sample.
A: equal to a parameter of the population.
B: an exact characteristic of the population.
C: an index calculated based on all data of the population.
D: obtained after studying all the individuals in the population.
E: calculated based on a sample.
举一反三
- The Statistic in Statistics is: A: obtained from the data of the population. B: reflection of the statistical characteristics of the population.r C: an index calculated based on all data of the population. D: obtained after studying all the individuals in the population. E: a statistical indicator calculated based on the sample.
- A foreign population is referred to as an autochthonous population.
- After the epidemic infection of infectious diseases, specific immunity is obtained, which increases the immune population and reduces the susceptibility of the population.
- which statement is right? A: We can observe the entire population. B: A sample drawn from the population of interest. is not adequate to discribe population. C: In the Monte Carlo demonstration from last time, an individual dataset was the sample and the Data Generating Process described the population. D: none of the above is right
- A researcher decide to draw the entire sample from one "representative" city, and the population includes all cities. the researcher must be confident that the chosen sample is truly representative of the entire population. This is belonging to ().