A football coach measured the heights and weights of 12 players, The data is shown below.
| Height (cm) | 188 | 194 | 178 | 175 | 185 | 175 | 188 | 193 | 180 | 190 | 181 | 169 |
| Weight (kg) | 73 | 103 | 86 | 72 | 80 | 61 | 93 | 89 | 74 | 97 | 71 | 64 |
Draw a scatter graph for this information.
Give an interpretation of the correlation between the height and weight of the footballers.
The equation of the regression line is w=1.37h−170w = 1.37h - 170w=1.37h−170. Give an interpretation of the gradient of this regression line.
Use the equation of the regression line to estimate the weight of a player who is 170cm tall.
Comment on the reliability of your estimate in part (d), giving a reason for your answer.
46 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.