Ross did an investigation into the relationship between study into temperature (ttt) and total hours of sunshine (sss) at Heathrow. He finds that the equation of the regression line is s=0.25t+1.3s = 0.25t + 1.3s=0.25t+1.3.
Give an interpretation of the figure 0.25 figure in this regression line.
5 exam-style questions on Edexcel A Level Maths Correlation, covering 4.1 Correlation and 4.2 Linear Regression. Each one has a worked solution and a mark scheme showing where the marks go.