PART 1 • Descriptive Statistics
9. To determine a baseline of smoking activity, 30 smokers at a smoking-
cessation clinic were observed for a day and the number of cigarettes each
smoked was counted. Find the mean, median, and modal number of cigarettes
smoked
Х f X f Х f
43 1
38 2 33 3
42 1
37 1
32 2
41 0
36 6
31 1
40 1
35 5
30 1
39 2
34 4

What does h hours mean

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.