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 - Page 6: 15

Answer

Sample

Work Step by Step

It is a sample because it only collects a part of the population data. Cholesterol levels are only collected from 20 patients out of 100 total in the hospital.
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