At School A, 27 of 90 pupils said they felt nervous before exams. At School B, 24 of 60 pupils said the same.
Calculate the percentage of pupils at each school who felt nervous before exams, and explain which school had the higher proportion.
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.