When would you use getProperty in a web application?

To retrieve the current value of a slider

What is the primary goal of supervised learning?

To make predictions based on labeled data

What is the purpose of the light sensor on the Circuit Playground?

To measure the brightness of the environment

What is the primary function of data in machine learning applications?

To provide a basis for algorithm training

How can biased survey data affect a machine learning model?

It can make the model less accurate and less generalizable

What happens if you define a function in your code but do not call it anywhere?

The function will never execute.

What does the draw() function do in a game or animation?

Continuously updates the screen

What should you do if your machine learning model consistently predicts the same outcome?

Investigate if the dataset lacks diversity and collect more varied data

How does data contribute to the functionality of machine learning applications?

By allowing the application to learn and adapt

When using sprites, what does dot notation allow you to do?

Set or change a property of the sprite

Which of the following is an example of a classification task?

Identifying whether an email is spam or not

What can be an effect of biased survey data on a machine learning model?

It can influence the accuracy of the model negatively

What can be a reason for a machine learning model's low accuracy?

Using a survey with specific and narrow questions

Which of these options correctly explains the functionality of buzzer.note("G3", 150)?

Buzzer plays the musical note G3 for 150 milliseconds

What is the purpose of a training dataset in supervised learning?

To test the accuracy of the model

What is a common approach to enhancing creativity in programming?

Combining known concepts in new ways

What is a key consideration when designing survey questions for a machine learning app?

Ensuring questions are broad and inclusive

What could potentially undermine the effectiveness of a machine learning model?

Over-representation of a single group

Why is it important to include an "Other" option for categorical questions in surveys?

To ensure the survey is comprehensive and inclusive

Why are Model Cards useful in machine learning?

They help users understand the model's intended uses and limitations

What is the primary characteristic of unsupervised learning?

It finds patterns in data without predefined labels

What is the function of the background() block in Code.org?

Sets the background color or image

In the context of AI Lab, what does the feature "number of attachments" help to predict?

Whether the email is spam or not

How do supervised and unsupervised learning differ in terms of data labeling?

Supervised uses labeled, unsupervised does not

What action does the following code perform? buzzer.note("A4", 200)

Plays note A4 for 200 milliseconds

Which function would you use to detect if the board is being shaken?

onBoardEvent(accelerometer, "shake")

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Fund. of Computer Science Spring Semester Exam Review

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Answers

1
When would you use getProperty in a web application?
To modify the color of a text element
To retrieve the current value of a slider
To add an item to a list
To set the visibility of a component
2
What property of a sprite can be used to change its horizontal position?
sprite.x
sprite.y
sprite.velocityY
sprite.velocityX
3
Which block is used to create a sprite in Code.org?
makeSprite()
createSprite()
drawSprite()
newSprite()
4
What is the primary goal of supervised learning?
To find patterns in data without labels
To make predictions based on labeled data
To generate random outputs
To operate without human intervention
5
On a Circuit Playground, which feature can visually indicate output from the device?
LEDs
Accelerometer
Light sensor
Microphone
6
Which sensor would you use to detect motion on the Circuit Playground?
Accelerometer
Light sensor
Temperature sensor
Motion sensor
7
What is the purpose of the light sensor on the Circuit Playground?
To measure temperature
To detect sound levels
To detect motion
To measure the brightness of the environment
8
Which category best describes the statement "var count = 0;" in computer terms?
Storage
Input
Processing
Output
9
The velocity of the jet increases by 0.2 every frame, what is the velocity after 5 frames?
0.6
1.2
1.0
2.0
10
How do computer models make decisions in machine learning?
Based on data analysis
All of the above
By randomly guessing
Using a decision tree
11
What is the primary function of data in machine learning applications?
To enhance the speed of the application
To decorate the user interface
To provide a basis for algorithm training
To secure the application
12
If a game requires a sprite to bounce off another, which collision method should be used?
bounceOff();
displace();
collide();
bounce();
13
How can biased survey data affect a machine learning model?
It can make the model less accurate and less generalizable
It can improve the model's ability to make predictions
It can have no effect on the model's accuracy
It can make the model more accurate
14
What happens if you define a function in your code but do not call it anywhere?
The function will never execute.
The function executes when the program ends.
The function executes automatically when the program starts.
The function executes repeatedly.
15
What does the draw() function do in a game or animation?
Ends the game loop
Draws a single frame
Sets up the game environment
Continuously updates the screen
16
Which property would you modify to change the size of a sprite?
sprite.size
sprite.width
sprite.dimension
sprite.scale
17
What should you do if your machine learning model consistently predicts the same outcome?
Reduce the size of the training data
Increase the number of epochs in the training process
Ignore the issue and continue using the model
Investigate if the dataset lacks diversity and collect more varied data
18
How does data contribute to the functionality of machine learning applications?
By improving the graphical interface
By increasing the app’s storage
By allowing the application to learn and adapt
By enabling user interaction
19
What block is used to play a sound in an animation or game?
startSound()
audioPlay()
playSound()
soundEffect()
20
Which category describes an if/else statement in computer terms?
Storage
Output
Input
Processing
21
When using sprites, what does dot notation allow you to do?
Move the sprite
Set or change a property of the sprite
Create a new sprite
Delete the sprite
22
What is the purpose of the penColor() function in coding?
To move the pen to a specific location
To set the color of the pen
To set the size of the pen
To draw shapes
23
How do machine learning algorithms typically make predictions from numerical data?
By visually interpreting the data charts
By calculating statistical averages
By deriving equations from the data
By using regression techniques
24
Which of the following is an example of a classification task?
Counting the number of cars passing by
Predicting the temperature tomorrow
Identifying whether an email is spam or not
Measuring the height of a person
25
What can be an effect of biased survey data on a machine learning model?
It makes the model run faster
It has no effect on the model's performance
It can influence the accuracy of the model negatively
It improves the accuracy of the model
26
What can be a reason for a machine learning model's low accuracy?
Selecting features that are not strongly related to the label
Using features with strong relationships to the label
Collecting data from diverse sources
Using a survey with specific and narrow questions
27
What would be a good feature to include in a survey for predicting student success in a course?
Number of hours spent studying
Student's favorite color
Student's shoe size
Student's birth month
28
Which of these options correctly explains the functionality of buzzer.note("G3", 150)?
Buzzer turns off after playing G3 for 150 milliseconds
Buzzer waits for the note G3
Buzzer plays the musical note G3 for 150 milliseconds
Buzzer increases volume for 150 milliseconds
29
What is the purpose of a training dataset in supervised learning?
To test the accuracy of the model
To train the model by providing examples
To generate random predictions
To visualize the data
30
How would you correctly initialize a component on a Circuit Playground?
var myLed = createLed("A6");
var component = initComponent("A6");
var newComponent = Component("A6");
var myComponent = createComponent("A6");
31
What function is used to check for keyboard input in an interactive game?
checkKey()
keyPressed()
keyDown()
isKeyPressed()
32
What is a common approach to enhancing creativity in programming?
Using only advanced programming techniques
Focusing solely on new programming blocks
Combining known concepts in new ways
Learning every possible programming language
33
What is a key consideration when designing survey questions for a machine learning app?
Ensuring questions are broad and inclusive
Collecting random information from participants
Ensuring questions are highly specific
Testing participants' knowledge about various topics
34
What category does the statement "var count = 0;" fall under?
Processing
Input
Storage
Output
35
What category do actions like pressing the "up" key or clicking the mouse button fall under?
Processing
Storage
Input
Output
36
What could potentially undermine the effectiveness of a machine learning model?
Thorough bias checks
Over-representation of a single group
Too many relevant features
Excessive breadth in survey questions
37
Why is it important to include an "Other" option for categorical questions in surveys?
To ensure the survey is comprehensive and inclusive
To reduce the size of the dataset
To provide more options for respondents
To increase the accuracy of the model
38
Why are Model Cards useful in machine learning?
They help users understand the model's intended uses and limitations
They provide a detailed record of the model's training process
They provide a summary of the model's performance metrics
They allow for automatic updates to the model
39
Which term refers to the extra information we supply to a block to customize its operation?
Argument
Input
Parameter
Function
40
A sprite must stop moving upon touching another sprite, which method should be used?
collide();
bounce();
bounceOff();
displace();
41
Which command sets the brightness of the LEDs on the Circuit Playground?
led.setBrightness()
setBrightness()
led.brightness()
setLEDBrightness()
42
Which sensor would you use in an app to trigger an action upon movement of the device?
Proximity sensor
Accelerometer
Light sensor
Pressure sensor
43
Which function is used to set an LED color on the Circuit Playground?
setLEDColor()
led.setColor()
setPixelColor()
setColor()
44
Which category describes actions like pressing the "up" key or clicking the mouse button?
Input
Processing
Storage
Output
45
What is the primary characteristic of unsupervised learning?
It uses labeled data to train models
It involves making decisions based on predefined rules
It finds patterns in data without predefined labels
It requires human intervention to provide examples
46
What category does the drawSprites() function fall under?
Storage
Input
Output
Processing
47
What is the function of the background() block in Code.org?
Sets the background color or image
Sets the background color
Changes the background size
Draws a background image
48
In the context of AI Lab, what does the feature "number of attachments" help to predict?
Whether the email is spam or not
The time the email was received
The sender of the email
The length of the email
49
How do supervised and unsupervised learning differ in terms of data labeling?
Both use unlabeled data
Unsupervised uses labeled, supervised does not
Both use labeled data
Supervised uses labeled, unsupervised does not
50
What action does the following code perform? buzzer.note("A4", 200)
Plays note A4 for 200 milliseconds
Loops the note A4 200 times
Sets the buzzer frequency to A4
Records the sound "A4" for 200 milliseconds
51
Which function would you use to detect if the board is being shaken?
onBoardEvent(accelerometer, "shake")
shakeDetect()
onEvent("accelerometer", "shake")
motionSensor()
52
What is the primary difference between supervised and unsupervised learning?
Supervised learning does not use labeled data
Unsupervised learning requires human intervention
Unsupervised learning makes decisions based on predefined rules
Supervised learning uses labeled data, unsupervised learning does not
53
To detect motion in your device, which sensor is most appropriate?
Humidity sensor
Gyroscope
Temperature sensor
Accelerometer
54
How can you change the animation of a sprite in Code.org?
sprite.changeAnimation()
sprite.animation()
sprite.setImage()
sprite.setAnimation()
55
How can you make a sprite rotate in Code.org?
sprite.turn(45)
sprite.rotation = 45
sprite.changeRotation(45)
sprite.setAngle(45)
56
What notation is commonly used to access or modify the properties of a sprite in programming?
Pointer notation
Bracket notation
Dot notation
Slash notation
57
How can you detect mouse clicks in a game?
mouseClicked()
mouseDown()
mouseCheck()
mousePressed()
58
What type of data does unsupervised learning use?
No data
Both labeled and unlabeled data
Labeled data
Unlabeled data
59
What technique might a computer model use to classify data?
Coin flipping
Manual sorting
Random guessing
Decision tree
60
Which of the following is an example of unsupervised learning?
Training a model to recognize handwritten digits with labeled examples
Grouping customers based on purchasing behavior without labels
Classifying emails as spam or not spam based on labeled data
Predicting stock prices using historical data with labels
61
How is the temperature data converted into Fahrenheit in coding using sensors?
By multiplying the Celsius value by 9/5 and adding 32
Directly using the tempSensor.F property
Using the tempSensor.C property
Adjusting the sensor's physical settings
62
How can you make the LED blink at a specific interval?
led.setBlink(interval)
led.blinkTime(interval)
led.blink(interval)
led.flash(interval)
63
Which statement best reflects a key principle of innovative programming?
Innovation is only possible with the latest technology.
Creative solutions often come from reusing and remixing existing code.
Constantly using new tools is essential for creativity.
Using complex algorithms is the only way to innovate.
64
What can be the impact of using specific and narrow survey questions in data collection?
It makes the data collection process faster
It increases the diversity of responses
It ensures the model is always accurate
It can limit the representativeness of the data
65
How can you read the value of the temperature sensor in Fahrenheit?
tempSensor.F
tempSensor.readF()
tempSensor.valueF()
tempSensor.getF()
66
What type of learning involves finding patterns in data without any predefined labels?
Supervised learning
Unsupervised learning
Semi-supervised learning
Reinforcement learning
67
What is the function of the tempSensor on the Circuit Playground?
To detect pressure
To detect light
To detect humidity
To detect temperature
68
What does the setProperty() function allow you to do in a user interface?
Delete an existing property
Set the value of a property
Create a new property
Get the value of a property
69
Which component of the Circuit Playground is used for user interaction as an input device?
Temperature sensor
Speaker
LEDs
Left button
70
What does the tempSensor.F property specifically provide in a temperature sensing context?
Atmospheric pressure
Temperature in Celsius
Humidity levels
Temperature in Fahrenheit
71
Which of the following is a common way to create a game loop in Code.org?
Using a for loop
Using the setup() function
Using the draw() function
Using a while loop
72
How can you detect if two sprites are touching each other?
sprite1.overlap(sprite2)
sprite1.touch(sprite2)
sprite1.isTouching(sprite2)
sprite1.collide(sprite2)
73
Why is it important to call a function in your code after defining it?
To initialize the function's variables.
To execute the set of tasks defined in the function.
To check for syntax errors within the function.
To allocate memory for the function.
74
Which block would you use to make a sprite continuously move to the right?
sprite.velocityX = 1
sprite.setSpeed()
sprite.changeDirection()
sprite.setAnimation()
75
What does the 'interval' parameter in the led.blink(interval) function represent?
The time between blinks in milliseconds
The color change frequency
The number of blinks per minute
The duration for which the LED stays on
76
Which machine learning method involves training a model with labeled data?
Supervised learning
Reinforcement learning
Unsupervised learning
Semi-supervised learning
77
What is the purpose of a model card in machine learning?
To describe the intended uses and limitations of a trained model
To document the color scheme of the app
To track user interactions with the model
To list all the variables used in the model
78
In what situation is getProperty appropriately used?
Creating a new user account
Changing the text on a button
Checking if a checkbox is checked
Decreasing the size of an image
79
What is a common error when working with functions in coding?
Forgetting to define a function
Forgetting to call the function
Using too many functions
Defining functions without arguments
80
Which type of machine learning is characterized by the use of labeled data to train algorithms?
Semi-supervised learning
Supervised learning
Reinforcement learning
Unsupervised learning
81
A function incrementScore(value) increments a score, how would you use it to subtract 5 points?
incrementScore(-5)
incrementScore()
decrementScore(5)
incrementScore 5-
82
How do you detect when the left button on the Circuit Playground is pressed?
onBoardEvent(buttonL, "press")
onBoardEvent(buttonL, "down")
onEvent("buttonL", "click")
onEvent("buttonL", "down")
83
In terms of computer operations what does drawSprites() represent?
Output
Storage
Processing
Input
84
Which event handler is used to trigger an action when the left button is pressed?
onBoardEvent(leftButton, "click") { ... }
onBoardEvent(buttonR, "down") { ... }
onEvent("buttonL", "click") { ... }
onBoardEvent(buttonL, "down") { ... }
85
In the code jet.velocityX = 0.2, what is the initial velocity of the jet before the draw loop?
0.4
0.2
1.0
0.0
86
What do we call the information we provide as input to a block to customize its function?
Parameter
Argument
Input
Function
87
In the context of machine learning, what is an algorithm?
A set of rules for solving a problem
A storage device
A large dataset
A type of computer hardware
88
What is the purpose of the frameCount variable in interactive animations and games?
To keep track of the frames since the program started
To store the score of the game
To count the number of sprites
To count the number of times a sprite is clicked
89
What is the role of features in machine learning?
To act as input variables used to make predictions
To store the data
To label the data
To determine the output
90
Why is it important to check for biases in the data collection process?
To ensure the data is consistent
To increase the speed of data processing
To ensure the model is accurate and fair
To reduce the size of the dataset
91
How can you adjust the speed of an LED's blinking in a coding environment?
Modify the 'speed' setting in the environment settings
Change the 'color' parameter in led.blink()
Alter the 'duration' setting in the code setup
Adjust the 'interval' parameter in led.blink()
92
What is the correct way to declare a new LED on a Circuit Playground in code?
var myLed = new LED("A6");
LED.create("A6");
var myLed = createLed("A6");
var myLed = LED("A6");
93
What category does an if/else statement fall under?
Storage
Input
Output
Processing
94
How can you make a sprite stop moving when it hits the edge of the canvas?
sprite.edgeBounce()
sprite.collideEdges()
sprite.bounceOffEdges()
sprite.wrapEdges()
95
How do you correctly invoke a function to add a specific number of points in JavaScript?
addPoints = 20
addPoints 20
add(Points, 20)
addPoints(20)
96
Which of the following is a method by which computer models can process and analyze data?
By guessing
Through debates
By intuition
Using data analysis
97
What is one way to reduce bias in survey data?
Only use data from respondents who fit a specific profile
Collect data from a single source
Ignore data that doesn't fit expected patterns
Ensure that data is collected from diverse sources
98
What command would you use to play a sound on the Circuit Playground?
sound.play()
buzzer.note()
playTone()
soundEffect()
99
Which function would you use to handle button presses on the Circuit Playground?
Neither, a different function is used
onBoardEvent()
Either onEvent() or onBoardEvent()
onEvent()
100
What does the onBoardEvent() function do in the context of a Circuit Playground?
Handles button press events
Changes the color of LEDs
Measures sound levels
Detects temperature changes

Fund. of Computer Science Spring Semester Exam Review Flashcards | StudBud