Which of the following causes sampling error?
a. Taking a random sample from a population instead of studying the entire population.
b. Making a mistake in the process of collecting the data.
c. Nonresponse bias.
d. All of these choices are true.
Question 2
The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a videocassette recorder over the past 12 months are satisfied with their products. If there are 4 different brands of videocassette recorders made by the company, the best sampling strategy would be to use a:
a. simple random sample.
b. stratified random sample.
c. cluster sample.
d. self-selected sample.
Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
Population Interactions and Communities
Sources of income for U.S. population aged 65 and over.
World population density
Relationship Between Income per Capita and Population Growth
Population Growth in America