What are the three principles to keep in mind when generalizing from a sample?

These are the three principles;

10 Representative samples are superior to biased samples.  

2) Less-variable perceptions are more dependable than those that are more variable.  

3) More cases are superior to less.  

Generalization, which is a demonstration of reasoning that includes drawing wide derivations from specific perceptions, is broadly recognized as a quality standard in quantitative research, yet is more questionable in qualitative research.