Concept explainers
To find: whether the survey of teacher to student method giving good sample or not.

Answer to Problem 11CT
This survey is not a good sample.
Explanation of Solution
Given:
Chosen a random table from each table in the cafeteria.
Concept used:
Taking random sample is the only data-collecting method that ensures that every set of individual has equal chances of being selected for the sample and does not introduced any significance bias. Taking either volunteer response sample or a convenience sample does not ensure these important aspects, as there is some unwanted selectivity involved in the data being collected.
Calculation:
No, because to choose the table the number of tables should be mentioned or the cafeteria may only contain specific grade levels at the time of survey.
This survey is not a good sample.
Chapter 12 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
Additional Math Textbook Solutions
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Elementary Statistics (13th Edition)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
Elementary Statistics
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