AP Computer Science Principles Unit 5: Data

How are pivot tables used? 

• To summarize raw data
• To publish data
• To send data via email for review
• To collect raw data

Definition: Ability to accommodate larger amounts of data and/or more users as time progresses

• Scalability 
• Metadata
• Frequency
• Privacy

Which of the following would be considered metadata of a survey administered to all SHHS students asking about lunch choices?

• Which lunch option the most students preferred

• The average 1-5 rating of each lunch choice

• The time each survey response was collected

Which of the following is a generally acceptable data cleaning procedure?

• Using fewer significant figures
• Rounding all data points up to the nearest 10
• Ignoring a row of incomprehensible responses
• Deleting rows of data that make analysis more challenging

What is missing from this data visualization? 

• Title
• Units
• Key/Legend
• Data Source

This chart is from Google trends. What does it likely indicate?

• "Chicago Cubs" is searched more than "Cleveland Indians"
• The Chicago Cubs were destined to win the World Series
• The Cleveland Indians are less popular than the Chicago Cubs
• Ohio is the only state that supports the Cleveland Indians

Which of the following is NOT an example of metadata for an image file?

• Size of the image
• Date the image was create
• Image resolution
• Copy of each image pixel

Which of the following is a likely source of bias in regards to collecting data about a city's governmental policies? 

• Surveying a random 10% representation of the population
• Surveying different neighborhoods regarding different topics
• Having the survey available only on a mobile application
• Having the survey available in digital and paper formats

What is crowdsourcing in terms of data collection and analysis? 

• Using civilians to help with some tasks, usually recruited online
• Removing government funding from research projects
• Limiting research to trained professionals
• Having users submit research ideas

Which of the following is the most common data misconception?

• Causation indicates correlation
• Correlation indicates causation
• Correlation always involves a direct relationship
• Causation occurs without correlation