Question

You have the following question on a survey. "What clubs are you involved in". Youselect every 25th student in all the classes to fill out the survey. Classify this survey Is this a random or non random

Answer 1

Answer: Random

To answer this question, let us first define what Random Sampling is.

Random Sampling describes when every elemnt in a population has an equal chance of being chosen for the sample.

There are 4 types of Random Sampling, but we are going to focus on one type which is the Systematic Random Sampling.

Systematic Random Sampling is a common technique where sample every kth element. For example, surveying every 100th person that walks in a mall.

Now based on the question, it is stated that "You select every 25th student in all the classes". This is an example of Systematic Random Sampling.

Therefore this survey is classified as Random.