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    Question

    What type of trend is best visualized using a line

    chart?
    A Periodic patterns in time-series data Correct Answer Incorrect Answer
    B Distribution of categorical variables Correct Answer Incorrect Answer
    C Relationships between two numerical variables Correct Answer Incorrect Answer
    D Relative proportions of a whole Correct Answer Incorrect Answer
    E Frequency distributions Correct Answer Incorrect Answer

    Solution

    Line charts excel in visualizing trends and periodic patterns in time-series data, such as monthly sales or temperature variations. The continuous line connecting data points highlights fluctuations and cycles, making it easy to identify upward or downward trends. For example, seasonal sales peaks during holidays are evident in line charts. This clarity is crucial for forecasting and strategic planning, as it visually communicates data behavior over time. Line charts are simple yet powerful tools for trend analysis in exploratory data analysis (EDA). Why Other Options Are Incorrect: Option B: Distribution of categorical variables is better shown with bar charts. Option C: Scatterplots, not line charts, best visualize relationships. Option D: Pie charts show proportions, not trends. Option E: Frequency distributions are better represented by histograms.

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