In: Statistics and Probability
Six subjects took part in a weight loss study. Each subject was weighed at the beginning of the study. The subjects then completed a six-week diet and exercise plan. They were weighed after completing the plan.
| Subject | Weight Before (lbs.) | Weight After (lbs.) | 
| 1 | 285 | 253 | 
| 2 | 265 | 230 | 
| 3 | 302 | 285 | 
| 4 | 293 | 298 | 
| 5 | 269 | 255 | 
| 6 | 288 | 271 | 
The results are shown below The variable Weight Change is defined as the Weight After minus the Weight Before. What is the average weight change? Include 1 decimal place in your answer.