What Sample and Sampling Mean
What Sample and Sampling Mean
The population is the whole group. The sample is the smaller part of the population that actually takes part in the study.
You can almost never study an entire population. Even if your population is “all Grade 7 students in my school” you may have three sections of forty students each, which is one hundred and twenty students. Running a careful intervention with one hundred and twenty students is hard. So you pick a sample.
Sampling (also called sampling technique) is the process of choosing that sample. It is a method, not a number. The number is just the outcome.
Two example combinations
Imagine your population is all Grade 9 students in my school (three sections, total 120 students).
Option A. Sample is Section A only (40 students). Sampling method: convenience.
Option B. Sample is twelve students from across all three sections who scored below 50 percent on the last writing test. Sampling method: purposive.
Both are valid. The choice depends on the question.
Tell them apart in one sentence each
- Sample is the group of people you actually study.
- Sampling is how you chose them.
Why even a small sample needs careful naming
Even if your sample is just one section that you already teach, you still need to describe it. Number of students. Average age. Gender mix. Language background. Any feature that might affect the result.
This is not bureaucracy. It is honesty. The reader of your study needs to know who the findings are about.
The two-word version of the same idea, short enough to keep in your head during a paper.
