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:Option B) . A statistic is a number that describes a sample and a parameter is a number that describes a population. Step-by-step 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([tex]\bar{x}[/tex]),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.