A football coach measured the heights and weights of 12 players, The data is shown below.
| Height (cm) | 187 | 193 | 177 | 174 | 184 | 174 | 187 | 192 | 179 | 189 | 180 | 168 |
| Weight (kg) | 75 | 105 | 88 | 74 | 82 | 63 | 95 | 91 | 76 | 99 | 73 | 66 |
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−167w = 1.37h - 167w=1.37h−167. 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.