Which statement is true about non-statistical sampling?

• A. It uses probability to select locations
• B. It includes biased and judgmental sampling
• C. It relies on random grid intervals
• D. It ensures representativeness by chance

Answer: (B)

Non-statistical sampling is about choosing locations or units without using probability, relying instead on the investigator’s judgment, convenience, or targeted selection. That’s why biased and judgmental sampling is a defining feature: the sample is shaped by what the researcher thinks is informative or accessible, not by random selection. This approach can be useful for exploratory work or when resources are limited, but it does not guarantee representation of the larger population.

In contrast, using probability to select locations or relying on random grid intervals are techniques aimed at achieving representativeness through chance, and the idea that representativeness is ensured by chance is the hallmark of statistical sampling.