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# Elementary Statistics and Probability Unit 2: Data Collection and Sampling Techniques Introduction

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@GoldenTrigonometry

### Why is it important to determine a sample size in a population?

To guarantee that the research study is accurate and representative

### What is the main difference between probability and non-probability sampling techniques?

Probability sampling requires random selection while non-probability sampling does not

Interpolation

### In a research study, what does 'applying the appropriate sampling technique' refer to?

<p>Using a method that matches the research objectives and population characteristics</p> Signup and view all the answers

### Why is it necessary to learn both probability and non-probability sampling techniques?

<p>To ensure researchers understand different approaches based on their study needs</p> Signup and view all the answers

### What could happen if a small sample size is used in a research study?

<p>The results may not be reflective of the entire population</p> Signup and view all the answers

### Which sampling technique lacks objectivity in the selection process?

<p>Convenience Sampling</p> Signup and view all the answers

### What is the defining feature of Quota Sampling?

<p>Equal representation of subgroups in the population</p> Signup and view all the answers

### In which type of sampling are respondents chosen based on their knowledge of the desired information?

<p>Purposive Sampling</p> Signup and view all the answers

### What is a common reason for using Convenience Sampling?

<p>Convenience for researchers</p> Signup and view all the answers

### If a study aims to determine the teenager’s most favorite brand of t-shirt without using randomization, which sampling technique is suitable?

<p>Quota Sampling</p> Signup and view all the answers

### What kind of criteria are used in Purposive Sampling to select respondents?

<p>Objective criteria chosen by researchers</p> Signup and view all the answers

### What is the main characteristic of Snowball Sampling as described in the text?

<p>Research participants recruit other members for the study.</p> Signup and view all the answers

### In which situation would Snowball Sampling be most beneficial?

<p>Investigating the social networks of homeless individuals.</p> Signup and view all the answers

### Which sampling technique involves selecting participants based on pre-defined characteristics?

<p>Stratified Sampling</p> Signup and view all the answers

### What makes Convenience Sampling different from Snowball Sampling?

<p>Convenience Sampling involves selecting samples without any specific criteria.</p> Signup and view all the answers

### Which sampling technique involves dividing the population into smaller groups before sampling?

<p>Cluster Sampling</p> Signup and view all the answers

### Why might researchers choose Simple Random Sampling over Snowball Sampling for a study?

<p>Simple Random Sampling guarantees representative samples.</p> Signup and view all the answers

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