When doing a research study, base on this article, is it fair to say that the sample size is small or does is it a good representation of the overall population?

 

Researchers from the Center for Forensic Science Research & Education said that was their experience last year when they set up camp outside Bayfront Park and sought to document drug use among the thousands of ticket holders who flock to downtown Miami each year for three days of electronic dance music. The event typically sells more than 160,000 tickets.

Out of 145 voluntary participants, 72 percent admitted to having consumed marijuana, cocaine, molly or ecstasy during the past week. And for the 100-plus brave souls who went a step further and agreed to have their blood taken, or give a urine sample, researchers said they found that 58 percent and 80 percent, respectively, had recently consumed designer drugs.