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?

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All of the above

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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? 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)

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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

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What does a crosstab chart do?

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Counts how many times combinations of values appear

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

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Open data