Is the number 1 cause of divorce in america because of stress and disagreements over money

What do economists mean when they use the latin expression ceteris paribus?

In a team environment, a coordinator is? a person with expert knowledge or skills in a particular area the team needs. a good listener who works to resolve social problems among teammates. a leader who team members focus on their tasks. a good networker who likes to explore new ideas and possiblities.

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.