Sampling

Advantages:

• personal opinions are given by those surveyed
• everyone has a chance of being chosen

Disadvantages:

• may not reach appropriate people
• very expensive

Advantages:

• cheaper than random sampling
• people from each category have a chance from being chosen

Disadvantages:

• may not be suitable for some products
• some people chosen may not be appropriate for the survey

Advantages:

• appropriate people are reached
• sample is accurate

Disadvantages:

• samples may be small