This instructional material aims to provide a comprehensive guide on understanding research respondents for teachers and students seeking reliable sources on this topic.

1. Cendz Flores

3. Population
The term population means all
members that meet a set of
specifications or a specified
criterion.
A single member of any given
population is referred to as an
element.
When only some elements
are selected from a
population

5. •
Types of Sampling Methods

6. Probability
• Simple Random
Sampling
• Systematic
Random Sampling
• Stratified Random
Sampling
• Clustering
Non
Probability
• Convenience
• Purposive
• Quota
• Snowball
Source

7. Simple Random Sampling

8. Systematic sampling: Researchers use the systematic sampling method to choose
the sample members of a population at regular intervals. It requires the selection
of a starting point for the sample and sample size that can be repeated at regular
intervals. This type of sampling method has a predefined range, and hence this
sampling technique is the least time-consuming.
Determine the interval
(Total population/ Sample Size)
N/n
N=500
n-50
interval=10

10. Stratified random
sampling
Stratified random
sampling

12. Reduce Sample Bias
Diverse Population

13. Types of non-
probability sampling

14. •

16. Example
Definition

17. Slovin's Formula
- is used to calculate the sample size (n) given the population size (N) and a margin of error
(e).
- it's a random sampling technique formula to estimate sampling size
-It is computed as n = N / (1+Ne2).
whereas:
n = no. of samples
N = total population
e = error margin / margin of error

18. Credit to the following:
https://www.questionpro.com
/
https://www.voxco.com
/