Question 1 (2.5 points)
Select the best graph or chart to show the distribution of finishing times of 25000 runners of the 2012 NY Marathon.
Question 1 options:
[removed] 
Pie Chart 
[removed] 
Bar graph 
[removed] 
Histogram 
[removed] 
Stem and Leaf 
Question 2 (2.5 points)
Select the best graph or chart for presenting the National Budget that has just been approved by Congress that addresses major agency allocations.
Question 2 options:
[removed] 
Pie chart 
[removed] 
Box chart 
[removed] 
Histogram 
[removed] 
Stem and Leaf 
Question 3 (2.5 points)
Two hundred and fifty (250) unrelated freshmen at UMUC were asked how many siblings they had. The results are shown in the graph below.
Answer the following question based on the shape of the histogram.
Question 3 options:
[removed] 
The above graph is Left Skewed. 
[removed] 
The above graph is Symetrical. 
[removed] 
The above graph is Right skewed. 
[removed] 
There is insufficient data to determine skewness. 
Question 4 (2.5 points)
Two hundred and fifty (250) unrelated freshmen at UMUC were asked how many siblings they had. The results are shown in the graph below.
Answer the following question based on the shape of the histogram.
Question 4 options:
[removed] 
Mean and median are equal.in value 
[removed] 
Mean is greater than median. 
[removed] 
Mean is smaller than the median. 
[removed] 
There is insufficient information to determine the relationship between the mean and the median. 
Question 5 (2.5 points)
The chart below contains 3 variables, Conference Rooms, Room Capacity and Room Size.
Conference Rooms 
Room Capacity 
Room Size (ft.)^{2} 
Frances Key 
50 
1500 
Paul Rever 
100 
3000 
Benjamin Franklin 
150 
5000 
George Washington 
250 
7500 
Classify the variable Conference rooms
Conference Rooms are
Question 5 options:
[removed] 
Discrete 
[removed] 
Continuous 
[removed] 
Neither 
Question 6 (2.5 points)
The chart below contains 3 variables, Conference Rooms, Room Capacity and Room Size.
Conference Rooms 
Room Capacity 
Room Size (ft.)^{2} 
Frances Key 
50 
1500 
Paul Rever 
100 
3000 
Benjamin Franklin 
150 
5000 
George Washington 
250 
7500 
Classify the variable Room size:
Room size is
Question 6 options:
[removed] 
Continuous 
[removed] 
Discrete 
[removed] 
Could be either. 
Question 7 (2.5 points)
A data set consists of 10 numbers. If each number in the data set has its value increased by 5 by how much will the mean of the scores in the data set change?
Question 7 options:
[removed] 
The mean stays the same. 
[removed] 
The mean increases by 5. 
[removed] 
The mean increases by 50. 
[removed] 
None of the choices are correct. 
Question 8 (2.5 points)
A data set consists of 10 numbers. If each number in the data set has its value increased by 5 by how much will the Standard Deviation of the scores in the data set change?
Question 8 options:
[removed] 
The standard deviation stays the same. 
[removed] 
The standard deviation increases by 5. 
[removed] 
The standard deviation increases by 50. 
[removed] 
None of the choices are correct. 
Question 9 (10 points)
Question 9 options:
A coin is flipped twenty times and landed heads fifteen times. Based upon this information, answer the following questions
If the coin is balanced (fair) what is the probability of a head on the next toss?
Fair means the equally likely principle applies.
Enter answer as a decimal to 2 place accuracy. Do not include a 0 to the left of the decimal point.
A coin is flipped twenty times and landed heads fifteen times. Based upon this information, answer the following questions:
If the coin is not balanced (not fair) what is the probability of a head on the next toss?
Not fair means the equally likely principle does not apply.
Enter answer as a decimal to 2 place accuracy. Do not include a 0 to the left of the decimal point.
Question 10 (10 points)
Question 10 options:
The StemandLeaf Diagram below depicts the length of 25 long distance telephone calls for a recently engaged couple separated due to an unexpected business trip.
Please answer the following questions.
When possible enter all answers as integers (0 decimal places)
If it is necessary to enter a non integer number, enter number to 1 decimal place.
Note: There are 25 long distance telephone calls. 26 = 26
0 
2 
1 
5 5 
2 
2 6 
3 
2 6 6 6 7 7 7 8 9 9 
4 
3 5 8 
5 
3 5 
6 
5 7 
7 
5 
8 
8 
9 
0 
What is the Median time for the long distance phone calls?
What is the range for the long distance phone calls?
How many modes does the data set have?
Enter the modes in the four locations provided.
List the modes in the order they appear in the data set from left to right.
If there are less than 4 modes enter a 0 in place of a modal number.
?
Question 11 (20 points)
Question 11 options:
The Contingency table cross classifies institutions of higher education in the United States by region and type, public or private.
Public 
Private 
Sub total 

Northeast 
6 
14 
20 
Mideast 
4 
12 
16 
South 
15 
9 
24 
West 
15 
25 
40 
Sub total 
40 
60 
100 
Enter all answer as a fraction (not reduced) or a decimal rounded to 2 decimal places with no 0 to the left of the decimal point.
Do not enter an answer as a percent.
Suppose an institution of higher education is selected at random.
Determine the probability the institution obtained is:
Located in the West?
Located in the Mideast and is a Public Institution?
Located in the West or is a Private Institution?
A Public Institution given the Institution is located in the Northeast?
Located in the Mideast and the Northeast?
Question 12 (20 points)
Question 12 options:
A shipment of TVs contains units that are 70% top quality. Thirty percent (30%) of the TVs are poor quality.
Two TVs are randomly selected from the shipment and tested.
What is the probability that both TVs selected are top quality?
Enter answer as a decimal rounded to 2 decimal places.
Do not include the 0 to the left of the decimal point.
Do not enter answer as a percent.
What is the probability that one of or more of the TVs are top quality?
Enter answer as a decimal rounded to 2 decimal places.
Do not include the 0 to the left of the decimal point.
Do not enter answer as a percent.
What is the probability that the average length of the rattlesnakes will be 60.85 inches or less?
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