Question

Choose the best definitions of parameter and statistic. A parameter is an unknown characteristic of a group and a statistic is a known characteristic of a group. A statistic is a number that describes a population and a parameter is a number that describes a sample. A statistic is a number that describes a sample and a parameter is a number that describes a population. A statistic is a variable that describes a sample and a parameter is a variable that describes a population. A parameter is a number that describes a population. A statistic is a number that is used to estimate a parameter.

Answer 1

B

Explanation:

Answer 2

Option B) . A statistic is a number that describes a sample and a parameter is a number that describes a population.

Explanation:

We can define parameter and statistic in the following manner:

• Parameters are numbers that summarize data for an entire population.
• Statistics are numbers that summarize data from a sample, which is a subset of the entire population.
• Examples of parameter: Population mean(μ), Population standard deviation(σ), etc.
• Examples of statistic: Sample mean(
  `\bar{x}`),sample standard deviation(s), etc.

Thus, the best definition of parameter and statistic is given by:

Option B) A statistic is a number that describes a sample and a parameter is a number that describes a population.