Question 1

The relational operator that means "not equal" is represented with which operator in Python?

Accepted Answer

A)   ==
B)   !=
C)   <=
D)   >=

Question 2

In order to use the sqrt()  function, you must use which of the following Python statements?

Accepted Answer

A)   use math;
B)   import math;
C)   math::sqrt() ;
D)   return sqrt() ;

Question 3

1. Match each definition with its term.
-Contains a question and other groups of statements that may or may not be executed, depending on the result of the question.

Accepted Answer

A)   Boolean values
B)   Selection statement
C)   Logical operators
D)   Relational expressions

Question 4

Explain the difference between the "=" in line 1 and the "==" in line 2 in the code sample below:
1. >>> apple = 25
2. >>> apple == 25
3. True

Accepted Answer

On line 1, the variable apple is assigne...

Question 5

The code in the accompanying case study 2 (see below) is used to calculate a running product.
>>> acc = 0
>>> for x in range(1, 6):
acc = acc + x
>>> acc
15

Accepted Answer

A) True 
 B)False

Question 6

Case Study 3: 1. if : 2. if : 3. 4. else: 5. 6. else: 7. if : 8. 9. else: 10. -Refer to the code in the accompanying case study. Under what circumstances are the statements on line 10 executed?

Accepted Answer

A)   The condition in line 1 is false, and the condition in line 7 is false.
B)   The condition in line 1 is false, and the condition in line 7 is true.
C)   The condition in line 1 is true, and the condition in line 7 is false.
D)   The condition in line 1 is true, and the condition in line 7 is true.

Question 7

1. Match each definition with its term.
-and, or, and not

Accepted Answer

A)   Boolean values
B)   Selection statement
C)   Logical operators
D)   Relational expressions

Question 8

Case Study 1:
>>> import math
>>> numSides = 8
>>> innerAngleB = 360.0 / numSides
>>> halfAngleA = innerAngleB / 2
>>> oneHalfSideS = math.sin(math.radians(halfAngleA) ) 
>>> sideS = oneHalfSideS * 2
>>> polygonCircumference = numSides * sideS
>>> pi = polygonCircumference / 2
>>> pi
3.0614674589207183
-Refer to the session in the accompanying case study 1. How many sides does the polygon in this approximation have?

Accepted Answer

A)   2
B)   8
C)   64
D)   pi

Question 9

Why are decisions referred to as "selection" in computer science?

Accepted Answer

In computer science, decisions are often...

Question 10

What equation relates pi to the circumference of a circle?

Accepted Answer

A)   C = 2πr (where r is the radius of the circle) 
B)   C = πr (where r is the radius of the circle) 
C)   C = 2πd (where d is the diameter of the circle) 
D)   C = 2πa (where a is the area of the circle)

Question 11

Case Study 3: 1. if : 2. if : 3. 4. else: 5. 6. else: 7. if : 8. 9. else: 10. -Refer to the code in the accompanying Case study 3. Why is this section of code referred to as "nested selection"?

Accepted Answer

The result of this structure is to decid...

Question 12

Explain how a Monte Carlo simulation can be used to calculate the value of pi.

Accepted Answer

Pretend that we are looking at a dartboa...

Question 13

Case Study 2:
>>> acc = 0
>>> for x in range(1, 6):
acc = acc + x
>>> acc
15
-Refer to the session in the accompanying Case Study 2. Explain what pattern this code implements and why it is useful.

Accepted Answer

The code implements a common problem-solving pattern known as the accumulator pattern. This common pattern comes up often. Your ability to recognize the pattern and then implement it will be especially useful as you encounter new problems that need to be solved. As an example, consider the simple problem of computing the sum of the first five integer numbers. Of course, this is quite easy because we can just evaluate the expression 1+2+3+4+5. But what if we wanted to sum the first ten integers? Or perhaps the first hundred? In this case, we would find that the size of the expression would become quite long. To remedy this, we can develop a more general solution that uses iteration.

Question 14

Which of the following is a constant in the math module?

Accepted Answer

A)   sqrt
B)   tan
C)   asin
D)   e

Question 15

1. Match each definition with its term.
-Compares two data values.

Accepted Answer

A)   Boolean values
B)   Selection statement
C)   Logical operators
D)   Relational expressions

Question 16

Case Study 2:
>>> acc = 0
>>> for x in range(1, 6) :
acc = acc + x
>>> acc
15
-Refer to the session in the accompanying case study 2. What type of variable is acc?

Accepted Answer

A)   Accumulator variable
B)   Range variable
C)   Initialization variable
D)   Timer variable

Question 17

Explain how to modify the coordinate system of the drawing window when using the turtle module.

Accepted Answer

To modify the coordinate system of the d...

Question 18

To create a random number in Python, use the ____ function.

Accepted Answer

A)   math.random() 
B)   random.random() 
C)   montecarlo.random() 
D)   help.random()  B

Question 19

Another name for an if statement is a selection statement.

Accepted Answer

A) True 
 B)False  True

Question 20

What are some patterns to keep in mind when implementing the Leibniz formula with Python?

Accepted Answer

All the numerators are 4.
The ...

Exam 2: Pthon: Estimating PI: Math and Random Methods, Selection and Boolean Expressions, the Print Function

The relational operator that means "not equal" is represented with which operator in Python?

Correct Answer
verified

In order to use the sqrt() function, you must use which of the following Python statements?

Correct Answer
verified

1. Match each definition with its term. -Contains a question and other groups of statements that may or may not be executed, depending on the result of the question.

Correct Answer
verified

Explain the difference between the "=" in line 1 and the "==" in line 2 in the code sample below: 1. >>> apple = 25 2. >>> apple == 25 3. True

Correct Answer
verified
On line 1, the variable apple is assigne...
View Answer

The code in the accompanying case study 2 (see below) is used to calculate a running product. >>> acc = 0 >>> for x in range(1, 6): acc = acc + x >>> acc 15

Correct Answer
verified

Case Study 3: 1. if <condition>: 2. if <condition>: 3. <statements> 4. else: 5. <statements> 6. else: 7. if <condition>: 8. <statements> 9. else: 10. <statements> -Refer to the code in the accompanying case study. Under what circumstances are the statements on line 10 executed?

Correct Answer
verified

1. Match each definition with its term. -and, or, and not

Correct Answer
verified

Correct Answer
verified

Why are decisions referred to as "selection" in computer science?

Correct Answer
verified
In computer science, decisions are often...
View Answer

What equation relates pi to the circumference of a circle?

Correct Answer
verified

Case Study 3: 1. if <condition>: 2. if <condition>: 3. <statements> 4. else: 5. <statements> 6. else: 7. if <condition>: 8. <statements> 9. else: 10. <statements> -Refer to the code in the accompanying Case study 3. Why is this section of code referred to as "nested selection"?

Correct Answer
verified
The result of this structure is to decid...
View Answer

Explain how a Monte Carlo simulation can be used to calculate the value of pi.

Correct Answer
verified
Pretend that we are looking at a dartboa...
View Answer

Case Study 2: >>> acc = 0 >>> for x in range(1, 6): acc = acc + x >>> acc 15 -Refer to the session in the accompanying Case Study 2. Explain what pattern this code implements and why it is useful.

Which of the following is a constant in the math module?

Correct Answer
verified

1. Match each definition with its term. -Compares two data values.

Correct Answer
verified

Case Study 2: >>> acc = 0 >>> for x in range(1, 6) : acc = acc + x >>> acc 15 -Refer to the session in the accompanying case study 2. What type of variable is acc?

Correct Answer
verified

Explain how to modify the coordinate system of the drawing window when using the turtle module.

Correct Answer
verified
To modify the coordinate system of the d...
View Answer

To create a random number in Python, use the ____ function.

Correct Answer
verified
B

Another name for an if statement is a selection statement.

Correct Answer
verified
True

What are some patterns to keep in mind when implementing the Leibniz formula with Python?

Correct Answer
verified
All the numerators are 4.
The ...
View Answer

Exam 2: Pthon: Estimating PI: Math and Random Methods, Selection and Boolean Expressions, the Print Function

The relational operator that means "not equal" is represented with which operator in Python?

Correct AnswerverifiedShow Answer

In order to use the sqrt() function, you must use which of the following Python statements?

Correct AnswerverifiedShow Answer

1. Match each definition with its term. -Contains a question and other groups of statements that may or may not be executed, depending on the result of the question.

Correct AnswerverifiedShow Answer

Explain the difference between the "=" in line 1 and the "==" in line 2 in the code sample below: 1. >>> apple = 25 2. >>> apple == 25 3. True

Correct AnswerverifiedOn line 1, the variable apple is assigne...View AnswerShow Answer

The code in the accompanying case study 2 (see below) is used to calculate a running product. >>> acc = 0 >>> for x in range(1, 6): acc = acc + x >>> acc 15

Correct AnswerverifiedShow Answer

Case Study 3: 1. if <condition>: 2. if <condition>: 3. <statements> 4. else: 5. <statements> 6. else: 7. if <condition>: 8. <statements> 9. else: 10. <statements> -Refer to the code in the accompanying case study. Under what circumstances are the statements on line 10 executed?

Correct AnswerverifiedShow Answer

1. Match each definition with its term. -and, or, and not

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Why are decisions referred to as "selection" in computer science?

Correct AnswerverifiedIn computer science, decisions are often...View AnswerShow Answer

What equation relates pi to the circumference of a circle?

Correct AnswerverifiedShow Answer

Case Study 3: 1. if <condition>: 2. if <condition>: 3. <statements> 4. else: 5. <statements> 6. else: 7. if <condition>: 8. <statements> 9. else: 10. <statements> -Refer to the code in the accompanying Case study 3. Why is this section of code referred to as "nested selection"?

Correct AnswerverifiedThe result of this structure is to decid...View AnswerShow Answer

Explain how a Monte Carlo simulation can be used to calculate the value of pi.

Correct AnswerverifiedPretend that we are looking at a dartboa...View AnswerShow Answer

Case Study 2: >>> acc = 0 >>> for x in range(1, 6): acc = acc + x >>> acc 15 -Refer to the session in the accompanying Case Study 2. Explain what pattern this code implements and why it is useful.

Which of the following is a constant in the math module?

Correct AnswerverifiedShow Answer

1. Match each definition with its term. -Compares two data values.

Correct AnswerverifiedShow Answer

Case Study 2: >>> acc = 0 >>> for x in range(1, 6) : acc = acc + x >>> acc 15 -Refer to the session in the accompanying case study 2. What type of variable is acc?

Correct AnswerverifiedShow Answer

Explain how to modify the coordinate system of the drawing window when using the turtle module.

Correct AnswerverifiedTo modify the coordinate system of the d...View AnswerShow Answer

To create a random number in Python, use the ____ function.

Correct AnswerverifiedB

Another name for an if statement is a selection statement.

Correct AnswerverifiedTrue

What are some patterns to keep in mind when implementing the Leibniz formula with Python?

Correct AnswerverifiedAll the numerators are 4.The ...View AnswerShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
On line 1, the variable apple is assigne...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
In computer science, decisions are often...
View Answer

Correct Answer
verified

Correct Answer
verified
The result of this structure is to decid...
View Answer

Correct Answer
verified
Pretend that we are looking at a dartboa...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
To modify the coordinate system of the d...
View Answer

Correct Answer
verified
B

Correct Answer
verified
True

Correct Answer
verified
All the numerators are 4.
The ...
View Answer