Chapter 7 Sampling Distributions

Question 1

parameter

Answer 1

a number describing some characteristic of the population, using it (the value) is unknown because the entire population cannot be examined

Question 2

statistic

Answer 2

a number describing some characteristic of the sample, can be computed directly from the sample date, used to estimate an unknown parameter

Question 3

sampling variability

Answer 3

the value of a statistic values in repeated random sampling

Question 4

sampling distribution

Answer 4

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

Question 5

unbiased estimator

Answer 5

a statistic used to estimate a parameter if the mean of its sampling distribution is equal to the true value of the parameter being estimated