Researchers produced a study that involved 875 workers in the auto industry. The study showed that after 30 years 367 were retir
ed, 85 were still employed in the auto industry, 300 left the industry, and the rest were not reachable. What is the problem with this study? precise numbers
There are 123 people that were not reachable, making missing data the biggest problem. It could be voluntary, but we're not told that, and it is most likely not voluntary, which also cancels out the chance that it could be self-interest. Precise numbers are usually what you want to aim for when you collect data, so that isn't a problem here.
