As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria?

My research participants have been chosen based on the inclusion criteria (age 18-35, living in area X). At first, I had distributed my research among my friends and then they spread mine to their social circle. Also, I had posted my research in Twitter to reach the target participants who are out of my social circle and their participation was based on their willingness to volunteer. Can this be regarded as random?

More Nur `Isyah Suffyea Sabri's questions See All
Similar questions and discussions