Chart & Data Visualization Guides
Practical, example-led guides to choosing, building and presenting charts.
- How to Make a Pie Chart (Step by Step, with Examples)Prepare part-of-a-whole data, calculate shares, label slices clearly and know when a bar chart is better.
- How to Make a Bar Graph: A Practical GuideVertical vs horizontal, sorting, grouped vs stacked bars, zero baselines and labels.
- How to Make a Line Graph That Shows the Trend ClearlyStructure time-series data, deal with gaps, pick the axis range and keep multi-line charts readable.
- Pie Chart vs Bar Chart: Which Should You Use?Side-by-side examples and simple rules for choosing between the two most common charts.
- The Best Charts for Comparing DataMatch the comparison you need (rank, groups, profiles, before/after) to the right chart.
- How to Visualize Survey ResultsThe right chart for single-choice, multi-select, Likert-scale and numeric survey questions.
- How to Create Charts from Excel or Google Sheets DataPaste or import spreadsheet data correctly: layouts, headers, number formats, dates and troubleshooting.
- How to Choose the Right Chart for Your DataA question-first chart chooser covering every chart type on the site.
- 10 Common Data Visualization Mistakes (and How to Fix Them)Ten frequent chart errors that mislead readers, with practical fixes.
- How to Create Presentation-Ready ChartsDeclutter, headline titles, highlighting, sizing and export settings for slides and reports.