Chaprer 14 Data Collection

Question 1

What are the stages of the problem-solving cycle?

Answer 1

1. Problem specification & analysis
2. Information collection
3. Processing & representation
4. Interpretation

Question 2

What should be ensured when taking a sample?

Answer 2

1. The data are not distorted by the act of collection
2. A suitable person is collecting the data
3. The sample is of a suitable size
4. A suitable sampling procedure is being followed.
5. The data is relevant
6. The data is unbiased

Question 3

What are some sampling procedures?

Answer 3

1. Simple random sampling
2. Stratified sampling
3. Cluster sampling
4. Systematic sampling
5. Quota sampling
6. Opportunity sampling
7. Self-selecting sample.

Question 4

What does processing and representation involve?

Answer 4

1. Cleaning the data
2. Calculating summary measures
3. Presenting the data using suitable diagrams.

Question 5

What tools are usually used for processing data?

Answer 5

Statistics software or a spreadsheet.