visualization-best-practices

Visualization Best Practices - Auto-activating skill for Data Analytics. Triggers on: visualization best practices, visualization best practices Part of the Data Analytics skill category.

0.98x

Quality

Does it follow best practices?

Impact

92%

0.98x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./planned-skills/generated/12-data-analytics/visualization-best-practices/SKILL.md

Evaluation results

83%

-4%

Quarterly Sales Performance Dashboard

Chart type selection and labeling

Criteria

Without context

With context

Bar chart for comparison

50%

Line chart for time trend

100%

No 3D charts

100%

Axis labels present

80%

60%

Chart titles present

100%

Legend present

87%

75%

Baseline at zero for bar

100%

Accessible color palette

60%

40%

Minimal chart junk

100%

Production-ready output

100%

Data units labeled

87%

100%

99%

Monthly User Engagement BI Report

SQL analytics for BI reporting

Criteria

Without context

With context

Appropriate aggregation functions

100%

GROUP BY used correctly

100%

Descriptive column aliases

100%

Date/time truncation for periods

100%

Filtering with WHERE or HAVING

87%

CTE or subquery for clarity

100%

SQL comments explaining logic

100%

ORDER BY for BI readability

100%

No SELECT *

100%

Consistent formatting

100%

Production-ready deliverable

100%

95%

A/B Test Results Analysis and Visualization

Statistical analysis visualization

Criteria

Without context

With context

Distribution chart used

100%

No bar chart for mean-only

100%

Confidence intervals or error bars

100%

Statistical metric annotated

100%

Consistent axis scales

62%

Chart titles present

100%

Axis labels present

62%

75%

Accessible color palette

100%

Runnable script output

100%

Summary statistics table

100%

No 3D or decorative charts

100%

Repository: jeremylongshore/claude-code-plugins-plus-skills
Commit: e9f9c93

Evaluated: 26 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Quarterly Sales Performance Dashboard Monthly User Engagement BI Report A/B Test Results Analysis and Visualization

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