What ensures that within the limits of chance, the sample will be representative of the sampling frame?

Probability sampling is the methodology that ensures within the limits of chance that the sample will be representative of the sampling frame. This technique relies on random selection methods where each member of the population has a known, non-zero chance of being selected. As a result, it minimizes bias and allows for stronger generalizations about the entire population based on the sample data.

By utilizing probability sampling, researchers can express confidence in the reliability of their findings, as the randomness incorporated into the selection process helps to account for variability and provides a solid foundation for statistical analysis. This random approach is crucial when attempting to draw viable conclusions and make predictions about a larger group from a smaller subset, as it assists in ensuring that the sample mirrors the characteristics of the overall population.