A grouped bar chart places separate bars side by side within each category, making subgroup counts easy to compare. For review analysis, product categories form the x-axis, review counts the y-axis, and review scores or sentiment categories supply the groups. section 3.3.3
Use the chart to:
- Compare positive and negative review counts across product categories. section 4.4
- Spot categories with stronger customer satisfaction or possible underperformance. section 4.4
- Aggregate overly detailed categories when a chart becomes too large to read. section 3.3.3
- Add ratios alongside counts when stakeholders need normalized comparisons. section 4.4
Review sentiment by product group
Group review scores into Positive for scores 4 or 5 and Negative otherwise, then plot the resulting counts by aggregated product category. A Seaborn bar plot can use product groups on the x-axis, counts on the y-axis, and sentiment as the hue. If category labels overwhelm the figure, rotate them or combine detailed categories into broader groups. The resulting comparison can identify areas for further investigation, such as product quality, customer expectations, or service delivery. section 4.4
