Dr. H studies the causes, consequences, and treatments of schizophrenia. In her current study, she is examining whether six people diagnosed with schizophrenia improve from baseline after receiving a new drug being tested to alleviate the symptoms the disease. She measures two different variables at pre- and post-during ingestion, one being levels of a neurotransmitter and the other being levels of positive symptoms of the disease. The results for each of the variables are displayed in the tables below.