A psychologist records the length of each pause made by participants during an interview and groups the times into one-second intervals. The psychologist draws a histogram for the pause times and a bar chart for the response types: agreement, disagreement, uncertainty and no response. The psychologist proposes placing the most frequent interval first in the histogram and the most frequent response type first in the bar chart.
Explain why the pause-time intervals should not be rearranged in this way, but the response types may be rearranged.
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.