Two groups completed a selective attention task containing 40 trials. The table shows the number of incorrect responses made by each participant.
| Group A | Group B |
|---|---|
| 3 | 3 |
| 4 | 6 |
| 4 | 9 |
| 5 | 12 |
| 5 | 15 |
| 6 | 18 |
| 6 | 21 |
| 28 | 25 |
A researcher concluded that Group A's performance was less consistent because its range was larger.
Explain why this conclusion is not a fair summary of the results. Support your answer with calculations.
173 exam-style questions on OCR GCSE Psychology 7.3 Analysing Research, covering 7.3.1 Types of Data, 7.3.2 Measures of central tendency, 7.3.3 Other descriptive statistics, 7.3.4 Tables, Charts and Graphs, 7.3.5 Reliability, 7.3.6 Validity and effects on validity, and 7.3.7 Sources of bias. Each one has a worked solution and a mark scheme showing where the marks go.