This worksheet covers data collection, processing and analysis, drawing conclusions, evaluating research, and communicating findings.
Part A — Data collection and analysis
Q1. Distinguish between objective and subjective data, giving one example of a measure for each. (4 marks)
Q2. For the dataset 6, 5, 7, 7, 8, 9, 5, 6, 7, 4, calculate the mean and median to two decimal places. (2 marks)
Mean:
Median:
Q3. For each correlation coefficient, state the strength and direction of the relationship:
- 0.91
- 0.24
- −0.86
(3 marks)
Part B — Evaluating research
Q4. Explain what 'reliability' means in psychological research, and outline one way it can be improved. (4 marks)
Q5. Define 'validity' and distinguish between internal and external validity. (3 marks)
Q6. A study used a small convenience sample. Explain how this affects the generalisability of its findings, and suggest one improvement. (4 marks)
Part C — Communicating
Q7. Justify why using an interview to assess motivation may be a better choice than using a checklist or rating scale. (4 marks)