A psychologist asked participants in two groups to complete a visual search task. The number who found the target symbol is shown below. The percentage for Group 2 has already been calculated.
| Group | Number who found the target | Total number of participants | Percentage who found the target |
|---|---|---|---|
| 1 | 21 | 35 | To be calculated |
| 2 | 14 | 20 | 70% |
For Group 1, 21 ÷ 35 = 0.6. Calculate the percentage of participants in Group 1 who found the target.
A researcher states, ‘Group 1 was more successful because 21 participants found the target, compared with 14 in Group 2.’
Explain why this conclusion is misleading.
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.