Researchers wanted to determine whether young couples who ma…

Reseаrchers wаnted tо determine whether yоung cоuples who mаrry or co-habituate are more likely to gain weight than those who stay single. The researchers followed 800 men and women for 7 years as they matured from teens to young adults. When the study began, none of the participants were married or living with a romantic partner. By the end of the study 14% of the participants were married and 16% were living with a romantic partner. The researchers found that married or co-habituating women gained, on average, 9 pounds more than singe women and men gained, on average, 6 pounds.What is the explanatory variable and what is the response variable?