Comp Sci Unit 5- Data

Front

Which question(s) do graphs/ charts help you answer? Is something more popular than something else? Has something increased or decreased over time? Are the frequencies of 2 events related?

Back

All of the above

Front

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

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

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Which of the following best describes Metadata? Options: Facebook data, Provides information about data (data about data), decreases effective use of data, Allows data to be unstructured and disorganized

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Provides information about data (data about data)

Front

Which of the following best describes the Data Analysis process? Collect data, clean and filter data, visualize and find patterns, generate new info

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

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Which is not a reason why data must be cleaned? Options: Data is incomplete, Multiple tables are combined into one, There is too much data

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There is too much data

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What is the goal of cleaning data?

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Clean data without changing its meaning

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Filtering data allows us to...

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look at a subset of data

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Which of these charts is better at looking relationships between 2 pieces of information? Bar charts, Histograms, Venn diagrams, Scatter Plots

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Scatter Plots

Front

What does a crosstab chart do?

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Counts how many times combinations of values appear

Front

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

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Open data