Let's use some real data so that we can calculate correlation more meaningfully. The following were the sizes and prices of houses in the City of Saratoga, California, in early 2014:
| House size (sq ft) | Price |
| 2100 | $1,620,000 |
| 2300 | $1,690,000 |
| 2046 | $1,400,000 |
| 4314 | $2,000,000 |
| 1244 | $1,060,000 |
| 4608 | $3,830,000 |
| 2173 | $1,230,000 |
| 2750 | $2,400,000 |
| 4010 | $3,380,000 |
| 1959 | $1,480,000 |