Concept explainers
Verify the statement.
Answer to Problem 21CR
Stratified method.
Explanation of Solution
Given information:
Sampling method is random, systematic, or stratified.
Calculation:
Stratified sampling method in this method, population is divided into the number of groups, and then random samples are taken from each groups and survey.
Here the ten students are randomly delected from each class, so by the defination stratified sampling, the sapmling method is stratified.
Hence, the result of the stratified sampling method gives the unbiased sample so the sample is randomly chosen.
Chapter 12 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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