in-an-online-survey-about-shopping-habits-the-following-question-was-posted-do-y

Question

In an online survey about shopping habits, the following question was posted:

"Do you often shop online?"

A total of 120,456 individuals responded, among them, 70% said "yes". What is this type of survey called, where the people surveyed are only those who chose to participate? What is problematic with this sampling method?

Accepted Answer

Voluntary response sampling; it may not represent the entire population because only certain individuals chose to respond.

Answer

Convenience sampling; it relies on individuals who are easiest to contact.

Answer

Random sampling; it only involves participants selected randomly from the population.

Answer

Stratified sampling; it divides people into subgroups based on their characteristics before sampling.

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