Question

question 18
0.5 pts
a company only selects customers who respond to an email invitation to participate in a study. this type of sample is best classified as:
convenience (non - probability) sample
simple random sample
stratified sample
probability sample with known selection likelihood

Explanation:

• A convenience (non - probability) sample is a sample where participants are selected because they are easily accessible or willing to respond (like customers responding to an email invitation).
• A simple random sample involves randomly selecting from the entire population, which is not the case here as only responders are chosen.
• A stratified sample divides the population into groups and samples from each, which is not what's happening.
• A probability sample with known selection likelihood has a known chance of selection for each element, but here selection depends on response (not a known probability - based process).

Answer:

A. Convenience (non - probability) sample