Chart Selection Training

Format: Given a data type, choose the most appropriate chart.

Data Type	Best Chart	Wrong Choice
Trends over time	Line chart	Pie chart
Part-to-whole proportions	Pie/Donut chart	Line chart
Category comparison	Bar chart	Scatter plot
Relationship between two variables	Scatter plot	Pie chart
Geographic distribution	Map/Heatmap	Bar chart

Exercise: Which chart would you use for each of these?

1. Revenue changes over the past 12 months
2. User source distribution by channel
3. User age distribution
4. Feature usage frequency ranking
5. Relationship between signup rate and retention rate