The data on price and quantity purchased relating to a commodity for 5 months is given below: Find the Pearsonian correlation coefficient between prices and quantity and comment on its sign and magnitude.
| Month |
January |
Febuary |
March |
April |
May |
| Prices (Rs): |
10 |
10 |
11 |
12 |
12 |
| Quantity (Kg): |
5 |
6 |
4 |
3 |
3 |
