If the variance is 9, then the standard deviation is: Question 11 options: 18. 81. 3. 4.5. Question 12 (5 points) Listen If a psychologist studying aggressive tendencies in people develops an inventory to measure aggression, the psychologist is using scores on the inventory as a(n): Question 12 options: abstract concept. variable. descriptive statistic. invariable construct. Question 13 (5 points) Listen A frequency table lists: Question 13 options: the times per second variations occur in various wave bands. the number of scores at each value. the intensity of a variable over all the participants studied. the average value of each variable. Question 14 (5 points) Listen The length of time a person talks in a group discussion is an example of a(n): Question 14 options: continuous variable. categorical variable. transformed variable. extraneous variable. Question 15 (5 points) Listen Based on the scores 1, 9, 3, 6, 1, 2, 6, 2, 2, and 8, a score of 2 is the: Question 15 options: mode. median. mean. standard deviation