Which of the following statements best describes the graph below?

A. The graph shows that for those who used nicotine patches there is a fairly normal distribution, whereas those who used hypnosis show a skewed distribution, where a very small proportion of people (relative to those using nicotine) smoke more than 2 cigarettes per day.
B. The graph shows that for those who used hypnosis there is a fairly normal distribution, whereas those who used nicotine patches show a skewed distribution, where a very large proportion of people (relative to those using nicotine) smoke less than 4 cigarettes per day.
C. The graph looks fairly unsymmetrical, indicating that the two groups are from different populations.
D. The graph looks fairly symmetrical. This indicates that both groups had a similar spread of scores before the intervention.
Answer: D
You might also like to view...
Teachers rank just behind parents as the most meaningful people in the lives of their students
Indicate whether the statement is true or false.
List the five steps that can help you follow directions more easily
What will be an ideal response?
What strategies does Ms. Bernstein use to keep her children's attention during various activities?
What will be an ideal response?
Technology use has the potential both to increase and decrease physical activity in young people, which can result in this major challenge to good health
What will be an ideal response?