befor 2 days was my first lecture in stats so i couldnot understand parameter and sample so please help me in answering this example:
According to the financial time newspaper (15-10-1987), the average size of an UK household had fallen from 3.14 persons in 1970 to 2.66 persons in 1987.
a) The 1987 figure of 2.66 is claimed to be the value of a population parameter. What are the population and the parameter?
b) What procedure must be taken to be 100% certain that the value of the population parameter is exactly 2.66?
c) What procedure was likely used to arrive at the 1987 figure of 2.66? Use the terms sample, sample statistic, and inference in your answer.