Liam has collected data from 25 local parks to investigate the relationship between the number of trees and the local species diversity index. He calculates the product moment correlation coefficient (PMCC).
Which of the following statements best describes his calculated result of 1.051.051.05?
202 exam-style questions on Edexcel A Level Maths Regression, Correlation and Hypothesis Testing, covering 1.1 Exponential Models, 1.2 Measuring Correlation, and 1.3 Hypothesis Testing for Zero Correlation. Each one has a worked solution and a mark scheme showing where the marks go.