A researcher gives 40 pupils a questionnaire about concentrating while studying. Three of the items and the pupils' responses are shown below.
| Questionnaire item | Agree | Disagree |
|---|---|---|
| I find it difficult to concentrate in the library. | 29 | 11 |
| I find it difficult to concentrate in the study hall. | 11 | 29 |
| The overcrowded library and constantly noisy study hall prevent pupils from concentrating. | 22 | 18 |
The researcher concludes that most pupils find both the library and the study hall prevent them from concentrating.
Explain why these results do not justify the researcher's conclusion.
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.