What is a limitation of using the range as a measure of dispersion?
It cannot be used with interval or ratio level data.
It is highly complex to calculate compared to the standard deviation.
It only considers the two most extreme values and ignores the distribution of the remaining scores.
It is easily distorted by central scores that cluster closely around the median.
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.