Which of these is an alternative to lithium carbonate as a treatment for bipolar disorder?

Which of the following is NOT a nonverbal cue?

a. touch b. thought c. eye contact d. tone of voice e. body language

Having found that the time children spend watching TV correlates with their weight, Dr. Sereno wanted to test the hypothesis that this relationship is due to activity level (less active children watch more TV and also are heavier). What approach could she use to examine this question?

a. coefficient of determination b. partial correlation c. linear regression d. a scatterplot e. Pearson correlation