A researcher wants to attain a random sample of young drivers who have received DUIs within the last year. Using the PREP system, he asks all first year students at WLU who have received a DUI to volunteer for the study. Thirty-five students actually admit to having received DUIs. He assigns a number to each of these students and chooses 15 participants using a table of random numbers.
6 answers
Indicate which of the following sampling techniques are examples of random sampling. For those that are not examples of random sampling, explain why.
What do you think?
I think so, but once again.. the wording is confusing me..
Didn't the students select themselves?
well.. 35 students showed up.. but fifteen were only chosen.. which would then be a random sample? right..?
Only 35 admitted to having a DUI. It's likely that many more had DUI's but didn't admit it.
Your sample is skewed.
Your sample is skewed.
1 answer