R068 Sampling Methods

Define what is meant by 'Cluster Sampling'

• Members of the population have an equal chance of being selected in the research

• Getting a sample that is representative of the overall population e.g. dividing population by income, age, location

• When parts of the population are sampled because of their geographic group

• Asking people who are willing to take part and available at the time e.g. friends in class.

Define what is meant by 'Random Sampling'

• Members of the population have an equal chance of being selected in the research

• Getting a sample that is representative of the overall population e.g. dividing population by income, age, location

• When parts of the population are sampled because of their geographic group

• Asking people who are willing to take part and available at the time e.g. friends in class.

Define what is meant by 'Quota Sampling'

• Members of the population have an equal chance of being selected in the research

• Getting a sample that is representative of the overall population e.g. dividing population by income, age, location

• When parts of the population are sampled because of their geographic group

• Asking people who are willing to take part and available at the time e.g. friends in class.

Define what is meant by 'Convenience Sampling'

• Members of the population have an equal chance of being selected in the research

• Getting a sample that is representative of the overall population e.g. dividing population by income, age, location

• When parts of the population are sampled because of their geographic group

• Asking people who are willing to take part and available at the time e.g. friends in class.

Describe an advantage of 'Cluster Sampling'

• Can gather opinions of specific, targeted groups

• True reflection of wider population

Describe an advantage of 'Quota Sampling'

• Can gather opinions of specific, targeted groups

• True reflection of wider population

Describe a disadvantage of 'Cluster Sampling'

• Not random, so there's a risk of bias

• Can be expensive if 'clusters' are too large

Describe a disadvantage of 'Quota Sampling'

• Not random, so there's a risk of bias

• Can be expensive if 'clusters' are too large

Describe an advantage of 'Convenience Sampling'

• Eliminates bias

• Easy because people are close and willing to participate

Describe an advantage of 'Random Sampling'

• Eliminates bias

• Easy because people are close and willing to participate