Comments on: Does A Large Sample Size Guarantee A Representative Sample?

By: Example Questionnaire

Example Questionnaire — Wed, 03 Aug 2011 15:18:21 +0000

Indeed it’s not so hard to calculate a representive sample, the hard part is to conduct the survey on this sample cause there are always people who don’t to part of a survey

By: Michaela Mora

Michaela Mora — Wed, 23 Jun 2010 19:23:55 +0000

There is an opt-in component when we talk about online panels, not necesarily particular studies. When we use online panels, we get samples from people that happen to be in the panel the same way you get those that happen to show up at the clinic. Panel samples are non-probability samples. Not all members of the population have the same chance of being chosen, but only those who are part of the panel.

By: CJ

CJ — Wed, 23 Jun 2010 19:06:25 +0000

Actually, convenience sample refers to how people are chosen to participate, (i.e., everyone who shows up at a clinic on a certain day that is chosen for data collection), not whether they opted to participate.

By: Michaela Mora

Michaela Mora — Mon, 07 Jun 2010 13:18:58 +0000

When we select a sample from a sample frame where we know the probability of someone being chosen, we call that a random sample. They are given a chance to participate regardeless whether they want to participate or not.

By: Sample Questionnaires

Sample Questionnaires — Mon, 07 Jun 2010 06:16:24 +0000

Convenience sample explains about those people who have interest in participating survey. what do we call others.