A large set of scores on a standardised memory test forms a normal distribution with a mean of 50. A pupil scores 78. No information about the spread of the scores is given.
Explain what can and cannot be concluded about the pupil's score from this information.
72 exam-style questions on Edexcel GCSE Psychology 11.2 Data analysis, covering 11.2.1 Arithmetic and numerical computation, 11.2.2 Descriptive statistics, 11.2.3 Tables, charts and graphs, 11.2.4 Primary and secondary data, and 11.2.5 Qualitative and quantitative data. Each one has a worked solution and a mark scheme showing where the marks go.