Explanation: This would be a correlational relationship.
Correlational relationship means the occurances can occur at the same time...they might be associated but one does not cause the other.
Casual relationship is basically a cause/effect relationship...one event occurs because of the other.
Just because a childs weight increases, does not mean their vocabulary expands...there are skinny people with great vocabulary. However, that does not mean that a " chubby " person cannot have good vocabulary.
