Exam 2: Sampling and Data Collection

A large supermarket chain in Nigeria is conducting research into consumer purchasing behaviour. It has 12 regions with 30 stores on average in each region. In order to save travel time, they decide to conduct the research in 10 randomly selected stores in each of 4 regions. What type of sampling approach is this an example of?

What term is used to describe data specifically collected to be used in a particular research study?

Why might a researcher make use of a sample rather than try to collect information about the whole population?

A software company wishes to improve training for its sales staff. It requires all members of the sales team to complete a survey to determine their needs. What term is used to describe this approach?

What advantage does the use of a stratified sample have in comparison to a simple random sample?

A researcher needs data that reflects what households choose to spend their money on. Which source of data is likely to provide the most suitable information?

A researcher collects data on the length of time callers have to wait to have their phone call to an advice centre answered. He visits every Thursday for 6 weeks. What type of bias is he most likely to encounter?

When deciding on the size of a sample, which is NOT an important consideration?

Which description BEST defines a simple random sample?

Which of the following is NOT a disadvantage of using secondary data?