1.
Knowledge of the researcher. It’s important to
consider the researcher’s capacity and capability in the field which he/she
wants to discover. In sense, it is in his proximity of study in order for
him/her to do such approach
2.
Tool used. Making sure whatever measurement the
investigator is using should be valid and reliable. Avoiding the possible
results to become biased and unstable due to errors which should be avoided.
3.
Sampling method. Obtain the samples which are
appropriate and that would cover the entire participants studied –not a half
but the entirety of what you want to study. Entirety means as much as the
possible sample covers.
4.
Population. Knowing the involved participants
and respondents in the study, properly defining and clustering helps the study
avoid bias.
