AP CSP Unit 5 - Data

What is metadata?

• Data that is about the data.

• Data that is everywhere.

• Data that can change.

• Data that needs filtered.

Recognizing patterns and similarities in data visualizations relates to which of the following about the data?

• Causation

• Correlation

• Metadata

• Filtering

Which of the following is NOT a benefit of metadata?

• It can be changed without impacting the primary data

• Used for sorting and filtering information

• Increases effective use of data by providing extra information

• Increases search speeds of the database

Which of the following is NOT a reason for data to be cleaned?

• Data is incomplete

• Data is invalid

• Multiple tables are combined into one

• Data is a string

What is the goal of the data analysis process?

• To search through databases quicker

• To gain insight into new information

• To make sure datasets are clean

• To collect the correct information

A town decides to publicize data it has collected about electricity usage around the city. The data is freely available for all to use and analyze in the hopes that it is possible to identify more efficient energy usage strategies.

Which of the following does this situation best demonstrate?

• Citizen science

• Crowdfunding

• Open data

• Machine Learning

A team of researchers wants to create a program to analyze the amount of pollution reported in roughly 3,000 counties across the United States. The program is intended to combine county data sets and then process the data. Which of the following is most likely to be a challenge in creating the program?

• A computer program cannot combine data from different files.

• Different counties may organize data in different ways.

• The number of counties is too large for the program to process.

• The total number of rows of data is too large for the program to process.

A camera mounted on the dashboard of a car captures an image of the view from the driver’s seat every second. Each image is stored as data. Along with each image, the camera also captures and stores the car’s speed, the date and time, and the car’s GPS location as metadata. Which of the following can best be determined using only the data and none of the metadata?

• The average number of hours per day that the car is in use

• The car’s average speed on a particular day

• The distance the car traveled on a particular day

• The number of bicycles the car passed on a particular day

Which of the following applications is most likely to benefit from the use of crowdsourcing?

• An application that allows users to convert measurement units (e.g., inches to centimeters, ounces to liters)

• An application that allows users to purchase tickets for a local museum

• An application that allows users to compress the pictures on their devices to optimize storage space

• An application that allows users to view descriptions and photographs of local landmarks

A mobile application is used to display local traffic conditions. Which of the following features of the application best exemplifies the use of crowdsourcing?

• Users can save an address to be used at a later time.

• Users can turn on alerts to be notified about traffic accidents.

• Users can submit updates on local traffic conditions in real time.

• Users can use the application to avoid heavily congested areas.