A sports psychologist investigates the relationship between the number of hours spent training per week and the time taken (in seconds) to complete a 100-metre sprint. The psychologist finds that athletes who train for more hours generally complete the sprint in fewer seconds.
Which of the following correctly identifies the type of correlation described and a highly plausible correlation coefficient (rrr) for this relationship?
Positive correlation, with a correlation coefficient of r=+0.75r = +0.75r=+0.75
Negative correlation, with a correlation coefficient of r=−0.75r = -0.75r=−0.75
Negative correlation, with a correlation coefficient of r=+0.75r = +0.75r=+0.75
Positive correlation, with a correlation coefficient of r=−0.75r = -0.75r=−0.75
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.