Forty pupils were asked which support service they would contact first if they felt worried about exams. The results were: school counsellor (15), family member (12), GP (8) and online helpline (5).
Explain which measure of central tendency is the only suitable one for these data.
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.