Visualize Correlation Between Load Time and Session Duration
Tests your ability to choose the right chart for correlation and layer in additional variables. A great answer starts with a scatter plot (load time vs. session duration), then uses color to represent the network type.
This question tests your data visualization skills: can you select the right chart to show correlation and then augment it to investigate a confounding variable? Propose a scatter plot with load time on the X-axis and session duration on the Y-axis. To add network type, suggest coloring the data points (e.g., WiFi vs. Cellular) to visually separate the groups on the same chart. A common mistake is suggesting separate charts or a bar chart, which obscures the direct relationship and makes comparison difficult.
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