A health specialist conducted an 8-week workshop on weight control during which all 17 of the people who completed the course lost weight. To assess the long-term effects of the workshop, she weighed the participants again 10 months later.
The weight lost or gained is listed with a positive sign for those who continued to lose weight and a negative sign for those who gained some back. What can you conclude about the long-term effects of the workshop?
-5 24 0 13 9 6 -7 -3 2
-10 -16 7 12 -19 -4 8 15