A student calculates the product moment correlation coefficient, rrr, for each of four different sets of bivariate data.
Identify the value of r r\,r that indicates the strongest linear correlation.
Circle your answer.
r=0.62r = 0.62r=0.62
r=−0.85r = -0.85r=−0.85
r=0.08r = 0.08r=0.08
r=−0.31r = -0.31r=−0.31
244 exam-style questions on AQA A Level Maths 2.2 L: Data presentation and interpretation, covering 2.2.1 Single-variable data diagrams, 2.2.2 Scatter diagrams and correlation, 2.2.3 Central tendency, variation and standard deviation, 2.2.4 Outliers and cleaning data, and 2.2 L: Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.