Elementary Statistics: Picturing the World (6th Edition)

Published by Pearson
ISBN 10: 0-32191-121-0
ISBN 13: 978-0-32191-121-6

Chapter 1 - Introduction to Statistics - Section 1.1 An Overview of Statistics - Exercises: 3

Answer

A parameter is a numerical description of a population characteristic. A statistic is a numerical description of a sample characteristic.

Work Step by Step

Data sets all have characteristics and usually we would like to investigate a specific characteristic. It is important to distinguish between the characteristics of a population and that of a sample, because they can differ. A parameter is therefore a numerical description of a population characteristic.And, a statistic is a numerical description of a sample characteristic. It is important to note that a sample statistic can differ from sample to sample whereas a population parameter is constant for a population.
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