What are the advantages and disadvantages of non probability sampling?

Answer 1

Advantages and disadvantages of probability sampling:

Advantages: Since it is done at random, the whole process is unbiased. This is good to use in smaller populations, of course it doesn't 100% protect from bias (depending on the question). But this option is a quicker way of achieving information.

Disadvantages: As i said before, depending on your question it cannot prevent from bias. Also, if you are sampling information from a large population this will take too much time and patience. There is also no guarantee that what these people say, represents what another group of people believe.

Non-probability sampling:

Advantages: This is more accurate because you are targeting a specific group, therefore your answers will be similar to what the rest of the population (of this group) will answer.

Disadvantages: This is more biased, because the individuals chosen are not at random. They also might not represent what another population thinks

Answer 2

Advantages

1. Saves time since it uses convinience

2. Cost effective

3.

Disadvantages

Biaseis since it depends on the judgement of the sample

2. Not all members of the population as equal opportunity