Charts Used in the Analysis

In data analysis, charts are used to visually represent information so that patterns and comparisons can be understood quickly. In this sales data analysis project, charts are created after data cleaning and aggregation to help interpret revenue trends, product performance, and customer behavior.

Instead of using many different chart types, this project focuses on a small and beginner-friendly set of charts that clearly communicate insights.

1. Line Chart
A line chart is used when we want to understand how values change over time. In this project, line charts are used to analyze revenue trends across months and years. After grouping sales data by month and year, a line chart helps beginners clearly see whether revenue is increasing, decreasing, or following a seasonal pattern. This makes it easier to understand long-term sales behavior.

2. Bar Chart
A bar chart is used to compare values across different categories. In this project, bar charts are used to compare total revenue across product lines, quarters, and customers. Once the data is aggregated, bar charts help visually identify which products perform best, which quarters generate higher revenue, and which customers contribute the most to sales.

3. Comparative Charts
Comparative charts are used when we want to compare the same metric across multiple groups. In this project, comparative bar charts are used to compare revenue across different years or quarters within the same chart. This allows beginners to easily compare performance across time periods and understand differences at a glance.

By using these charts, the project converts numerical results into clear visual insights, making the analysis easier to understand and interpret for beginners.