A psychologist records how often each participant checks their phone during a 30-minute waiting period. The results are grouped below.
| Number of phone checks | Number of participants |
|---|---|
| 0 to 2 | 8 |
| 3 to 5 | 18 |
| 6 to 8 | 14 |
| 9 to 11 | 8 |
| Total | 48 |
Calculate the proportion of the sample who checked their phone outside the range 3 to 8 times. Express the result as a fraction in its lowest terms.
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.