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4 cards from this section. Quick, good the night before a test.
What is the primary purpose of data cleaning?
Think about why we want our data to be accurate.
Name one tool commonly used for data visualization.
It's a tool many people are familiar with.
What is the first step in data exploration?
Consider the importance of data quality.
True or False: Visualization tools can help us interpret statistical data more clearly.
Think about how you feel when looking at a chart versus a long list of numbers.
Given a dataset with missing values, outline a strategy to handle these values. Include specific methods and justify your choices.
Consider whether the missing data influences any conclusions you would draw.
Analyze a set of data that reveals water leakage spikes. Describe how you would visualize this data and what tools you would use.
Think about what kind of visualization would be most effective for time series data.
6 more questions in this section. Enroll free to practise them all.
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