A cognitive psychologist is investigating the effects of stress on selective attention. Using a computerised Stroop task, they record the reaction times (in milliseconds, ms\text{ms}ms) of a sample of 10 participants under high-stress conditions:
480,610,450,520,490,560,720,500,490,530 480, \quad 610, \quad 450, \quad 520, \quad 490, \quad 560, \quad 720, \quad 500, \quad 490, \quad 530 480,610,450,520,490,560,720,500,490,530What is the median reaction time for this dataset?
510 ms510\text{ ms}510 ms
525 ms525\text{ ms}525 ms
535 ms535\text{ ms}535 ms
500 ms500\text{ ms}500 ms
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.