Case 1: Searched from the Web
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Chart 1

Issues: Lacks descriptive title, axis labels, and units; uses the same color for "Before" and "After."

Improvements: Add title, labels, and units; use different colors for each bar.

Chart 2

Issues: Error bars are unexplained; bars lack color variety; “Find bill from May 12” is highlighted without explanation; watermark may be distracting.

Improvements: Explain error bars; use varied colors; clarify emphasis on specific tasks; move or minimize watermark.

Case2: What I made before
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line graph

Issues: The choice of chart type may not be optimal for comparing hospitals' data points, which do not form a continuous trend over time. A bar chart or stacked bar chart would be more suitable for this purpose. Furthermore, the information hierarchy is not well-established.

Improvements: The chart design should be optimized by selecting a more appropriate chart type, using more distinct colors, and adding clear axis labels and a title.

bar chart

Issues: The chart aims to display the average length of hospital stay for different hospitals in the first quarter. However, it faces challenges in data accuracy and readability due to overlapping data and unclear correspondence.

Improvements: The chart design also lacks clarity in information hierarchy and could benefit from optimizations such as clearer data labeling, enhanced contrast between bars, and better organization of text and numbers to improve readability and information delivery.