Answered: A teacher surveys his students to find…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Simple Random Sampling
Systematic Sampling
Convenience Sampling
Stratified Sampling
Cluster Sampling

A teacher surveys his students to find out if his students are doing homework. Identify the sampling
method used in each example below.
The teacher asks every sixth student who walks into the
classroom to present the homework problems to the class.
The teacher randomly. chooses three students from each row to
present the homework problems to the class.
The teacher randomly chooses three rows and has all students
in each of those rows present the homework problems to the class.
O The teacher has all students who walk in late present the
homework problems to the class.
O The teacher draws students' names from a hat, then has those
students present the homework problems to the class.

Expert Solution

Step 1

When individuals are selected at a regular interval from sampling frame, then this type of sampling is called systematic sampling. In given scenario teacher asks every sixth student who walks into the classroom to present the homework problems to the class. Hence systematic sampling method is used in this example.

When population is divided into sub-groups depending upon the similar characteristics and then random sample is chosen from each sub-group, this type of sampling is called stratified sampling. In given example teacher randomly chooses three students from each row to present the homework problems to the class. Hence stratified sampling method is used in this example.

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