In a research study investigating cognitive processing speeds, a psychologist calculates the mean reaction time for a condition to be 4.3852 seconds. What is this value expressed to two decimal places?
4.384.384.38
4.394.394.39
4.404.404.40
4.3854.3854.385
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.