🔹 Why the Legend is Missing

1. Only one variable/category (no grouping).

2. Chart type doesn’t use a legend (e.g., histogram).

3. Legend option hidden in Chart Editor.

4. No “grouping variable” defined in Chart Builder.

🔹 Fixes

1. Double-click chart → Chart Editor → Elements → Show Legend.

2. In Chart Builder, add a grouping variable (e.g., Gender).

3. Use chart types that support legends (clustered bar, multiple line, pie).

4. As last resort, manually add text labels.
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