In order to measure customer sentiment about mall hours, Stephanie the stats intern was sent out into the mall to collect some data. She walked to central food courtand then asked some short survey questions to the first 25 patrons who passed by her station.

Which statistical sampling technique best describes her methodology?

1. cluster sampling
2. convenience sampling
3. judgment sampling
4. network sampling
5. quota sampling
6. simple random sample
7. snowball sampling
8. stratified sampling
9. systematic sampling