AP Stats Mid Term Review Problem Set 
____ 1. The pie chart describes the distribution of state tree types for the 50 states in the United States. The category “Other” include all trees that are the state tree for two or fewer states. Which of the following conclusions can we draw from this chart?
a.
Some states have not designated a “state tree.”
b.
The cottonwood is the state tree for 12 states.
c.
Taken together, oak, pine, and maple are the state trees for more than half the states.
d.
There are 10 states that have designated a pine as their state tree.
e.
There is no state that has designated the Eastern Red Cedar as its state tree.
____ 2. The following bar graph gives the percent of owners of three brands of trucks who are satisfied with their truck.
From this graph, we may conclude that
a.
owners of other brands of trucks are less satisfied than the owners of these three brands.
b.
Chevrolet owners are substantially more satisfied than Ford or Toyota owners.
c.
there is very little difference in the satisfaction of owners for the three brands.
d.
Chevrolet probably sells more trucks than Ford or Toyota.
e.
a pie chart would have been a better choice for displaying these data.
____ 3. Here are the IQ test scores of 10 randomly chosen fifth-grade students:
145
139
126
122
125
130
96
110
118
118
To make a stemplot of these scores, you would use as stems
a.
0 and 1.
b.
09, 10, 11, 12, 13, and 14.
c.
96, 110, 118, 122, 125, 126, 130, 139, and 145.
d.
0, 2, 3, 5, 6, 8, 9.
e.
None of the above is a correct answer.
____ 4. If a distribution is skewed to the right, which of the following is true?
a.
The mean must be less than the median.
b.
The mean and median must be equal.
c.
The mean must be greater than the median.
d.
The mean is either equal to or less than the median,
e.
It’s impossible to tell which of the above statements is true without seeing the data.
____ 5. Rainwater was collected in water collectors at 30 different sites near an industrial complex and the amount of
a.
Some states have not designated a “state tree.”
b.
The cottonwood is the state tree for 12 states.
c.
Taken together, oak, pine, and maple are the state trees for more than half the states.
d.
There are 10 states that have designated a pine as their state tree.
e.
There is no state that has designated the Eastern Red Cedar as its state tree.
____ 2. The following bar graph gives the percent of owners of three brands of trucks who are satisfied with their truck.
From this graph, we may conclude that
a.
owners of other brands of trucks are less satisfied than the owners of these three brands.
b.
Chevrolet owners are substantially more satisfied than Ford or Toyota owners.
c.
there is very little difference in the satisfaction of owners for the three brands.
d.
Chevrolet probably sells more trucks than Ford or Toyota.
e.
a pie chart would have been a better choice for displaying these data.
____ 3. Here are the IQ test scores of 10 randomly chosen fifth-grade students:
145
139
126
122
125
130
96
110
118
118
To make a stemplot of these scores, you would use as stems
a.
0 and 1.
b.
09, 10, 11, 12, 13, and 14.
c.
96, 110, 118, 122, 125, 126, 130, 139, and 145.
d.
0, 2, 3, 5, 6, 8, 9.
e.
None of the above is a correct answer.
____ 4. If a distribution is skewed to the right, which of the following is true?
a.
The mean must be less than the median.
b.
The mean and median must be equal.
c.
The mean must be greater than the median.
d.
The mean is either equal to or less than the median,
e.
It’s impossible to tell which of the above statements is true without seeing the data.
____ 5. Rainwater was collected in water collectors at 30 different sites near an industrial complex and the amount of