An oceanographer, Dr. Aris, is investigating the linear relationship between seawater salinity levels SSS and dissolved oxygen concentration DDD across 18 hydrothermal vent samples. After performing her calculations, she determines the product moment correlation coefficient (PMCC) for the dataset.
Which of the following statements best describes her calculated result of −1.42-1.42−1.42?
107 exam-style questions on Edexcel A Level Maths 1.2 Measuring Correlation. Each one has a worked solution and a mark scheme showing where the marks go.