Comp Sci Unit 5- Data

Which question(s) do graphs/ charts help you answer?

• Is something more popular that something else?

• Has something increased or decreased over time?

• Are the frequencies of 2 events related?

• All of the above

The main difference between correlation and causation is that ...

• Correlation tells you that one thing caused another

• Correlation shows similarities/ patterns, while causation shows cause & effect

• Causation shows patters while correlation shows cause & effect

• Causation and correlation mean the same thing

Which of the following best describes Metadata?

• Facebook data

• Provides information about data (data about data)

• decreases effective use of data

• Allows data to be unstructured and disorganized

Which of the following best describes the Data Analysis process?

• Clean and filter data, collect data, visualize data, generate new info

• Visualize data, clean and filter data, generate new information, collect data

• Generate new information, clean data, collect data, visualize data

• Collect data, clean and filter data, visualize and find patterns, generate new info

Which is not a reason why data must be cleaned ?

• Data is incomplete

• Multiple tables are combined into one

• There is too much data

What is the goal of cleaning data?

• Make data easier to understand by changing its meaning

• Clean data without changing its meaning

• Get rid of any data that you don't like

• Make data more socially acceptable

Filtering data allows us to...

• look at a subset of data

• eliminate parts of data that don't agree with our opinion

• Get rid of larger chunks of data

• Prove causation of events

Which of these charts is better at looking relationships between 2 pieces of information?

• Bar charts

• Histograms

• Venn diagrams

• Scatter Plots

What does a crosstab chart do?

• Looks at data on multiple tabs on your browser

• Counts how many times combinations of values appear

• Tells you if 2 things are related

• Cleans and filters your data for you

Which kind of data is publicly available and shared by governments and organizations?

• Open data

• Citizen Science and Crowdsourcing

• Big data