Stats Chapter 7

I need this

distribution of sample data

distribution of values taken by a statistic in all possible samples of the same size from the same population

unbiased

If a statistic used to estimate a parameter is such that the mean if its sample distribution is equal to the true value of the parameter being estimated, what is the statistic said to be?

the distribution of sample date

Has a mean that varies from sample to sample

statistic

a number that describes some characteristic of the population

parameter

a number that describes some characteristics of a sample