A factory produces plastic parts used to fit in car dashboards. It is important that the parts are produced with the correct dimensions, or they may not fit in the car dashboard. To ensure that the parts are being made correctly, a sample of parts is checked and measured each day. Which of the following methods would not represent a convenience sample?
Right after lunch, the first 25 parts are inspected.
Fifty parts are chosen at random from the many parts made each day.
At the end of the day, a container of 30 parts is inspected and measured.
The first 20 parts produced after the start of the day are inspected and measured.
The method that would not represent a convenience sample is:
The first 20 parts produced after the start of the day are inspected and measured.
Convenience sampling involves selecting individuals or items that are easily accessible or readily available. In this case, selecting the first 20 parts produced after the start of the day does not meet the criteria of convenience sampling as it involves a specific pattern rather than accessibility or availability.