Excel Basics Part 8: Charts

Charts are a great way to turn numbers into decisions. They are essential for interviews and daily reporting!

1. Column Chart
Best for comparison. 
Use when: 
• Compare sales by product
• Compare marks by student
Example: 
Products A B C 
Sales 40 65 30 
Insert: Select data → Insert → Column Chart 
Tip: Keep categories short. Sort values.

2. Bar Chart
Horizontal layout, same as column. 
Use when: 
• Long category names
• Ranking data
Example: Departments vs Headcount 
Tip: Great for dashboards with many labels.

3. Line Chart
Shows trend over time. 
Use when: 
• Monthly revenue
• Daily website traffic
Example: Jan to Dec sales trend 
Tip: Avoid too many lines. Two or three max.

4. Pie Chart
Shows proportion. 
Use when: 
• Market share
• Expense split
Example: Rent 40%, Food 30%, Travel 20%, Other 10% 
Rule: Use only if parts add to 100%.

5. Area Chart
Trend with volume emphasis. 
Use when: 
• Cumulative growth
• Capacity usage
Tip: Line chart first. Area only if volume matters.

6. Combo Chart
Two metrics, one view. 
Use when: 
• Revenue vs Profit
• Sales vs Growth rate
Example: Bars for sales, line for growth.

Interview Tips: 
• Know when to use which chart.
• Never use pie for trends.
• Label axes clearly.
• Remove gridlines if not needed.

Real-world Example: 
Sales dashboard: 
• Column for product comparison.
• Line for monthly trend.
• Bar for region ranking.

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