Statistics Practice Exercise
Questions
Calculate coefficient of correlation by the concurrent deviation.
| Supply | Price |
| 112 | 106 |
| 125 | 102 |
| 126 | 102 |
| 118 | 102 |
| 118 | 104 |
| 121 | 98 |
| 125 | 96 |
| 125 | 97 |
| 131 | 95 |
| 135 | 90 |
The table shows the number of motor registrations in a certain territory for a term of 5 years and the sale of motor tyres by a firm in that territory for the same period.
| Year | Motor Registrations | No of Tyres sold |
| 1 | 600 | 1,250 |
| 2 | 630 | 1,100 |
| 3 | 720 | 1,300 |
| 4 | 750 | 1,350 |
| 5 | 800 | 1,500 |
Find the regression equation to estimate the sale of tyres when the motor registration is known.
Estimate sale of tyres when registration is 850
Find the regression equation to estimate the sale of tyres when the motor registration is known. Estimate sale of tyres when registration is 850.
