Educ216: Probability and Non-Probability Sampling

It is the process of selecting units, like people, organizations, or objects from a population of interest in order to study and fairly generalize the results back to the population from which the sample was chosen

• Sampling frame

• The Frame

• Sampling

• Probability

These units must cover the whole of the population and they must not overlap, in the sense that every element in the population belongs to one and only one unit.

• Sampling Frame

• The frame

• Sampling

• Probability

It is a method of selecting a sample (n) from a universe (N) such that each member of the population has an equal chance of being included in the sample and all possible combinations of size (n) have an equal chance of being chosen as the sample.

• Random Sampling

• Probability Sampling

• Non-probability Sampling

• Stratified Sampling

It is a method wherein the manner of selecting a sample (n) from a universe (N) depends on some inclusion rule as specified by the researcher.

• Random Sampling

• Probability Sampling

• Non-probability Sampling

• Stratified Sampling

This is a random sampling technique in which the population is divided into non-overlapping subpopulations called strata.

• Random Sampling

• Probability Sampling

• Non-probability Sampling

• Stratified Sampling

A technique that considers different stages or phases in sampling.

• Multi-stage

• Purposive

• Snowball

• Heterogeneity

The process starts by identifying someone who meets the criteria for inclusion in the study. The respondent is then asked to recommend others whom they may know who also meet the criteria.

• Multi-stage

• Purposive

• Snowball

• Heterogeneity

Performed when all opinions or views about a specific topic are the primary concern and representing these views proportionately is not of major importance.

• Multi-stage

• Purposive

• Snowball

• Heterogeneity

What equation is commonly used by statisticians to determine the samples when the population is equal or more than 500.

(a)  

What is Slovin's Formula? Type down below.

(a)