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name: pareto description: Identify the vital 20% of activities that produce 80% of results using real case studies and proven patterns. Use when optimizing business, learning, productivity, or any area where focus matters. allowed-tools: AskUserQuestion

Pareto Principle Analyzer

Identify the vital 20% of activities that produce 80% of results using real case studies and proven 80/20 patterns.

Real 80/20 Case Studies

Business Revenue

Case: SaaS Company Revenue Analysis

• 22% of customers generated 89% of revenue
• Top 5 customers = 41% of total revenue
• Action: Created dedicated success team for top 22%, reduced support for bottom 50%
• Result: 34% revenue increase, 20% cost reduction

Case: E-commerce Product Analysis

• 18% of SKUs generated 82% of profit
• 40% of SKUs were break-even or losing money
• Action: Discontinued bottom 30% of products
• Result: 15% profit increase, 40% reduction in inventory costs

Software Development

Case: Bug Distribution (Microsoft Study)

• 20% of bugs caused 80% of crashes
• 1% of bugs caused 50% of crashes
• Action: Prioritize top 1% first, then top 20%
• Result: Most stable Windows release to date

Case: Code Optimization

• 4% of code executed 50% of runtime
• 20% of functions contained 80% of bugs
• Action: Focused optimization and testing on hot paths
• Result: 10x performance improvement with 20% of the effort

Sales & Marketing

Case: B2B Sales Pipeline

• 23% of leads converted to 81% of deals
• Pattern: Leads with technical champion + budget authority
• Action: Qualification focused on these two factors
• Result: Sales cycle shortened by 40%

Case: Marketing Channels

• 2 channels (of 8 tested) drove 76% of conversions
• 4 channels had negative ROI when fully costed
• Action: 10x budget on top 2, killed bottom 4
• Result: 3x marketing efficiency

Personal Productivity

Case: Developer Time Study

• 2 hours of deep work = 80% of meaningful output
• 6 hours of meetings/email = 20% of output
• Pattern: First 2 hours of day most productive
• Action: Protected morning block, batched communication
• Result: Same output in 6 hours vs previous 10

80/20 Patterns by Domain

Business

Area	Typical 80/20 Finding	Action
Customers	20% generate 80% of revenue	Tier support, dedicated success for top tier
Products	20% generate 80% of profit	Discontinue losers, double down on winners
Features	20% used 80% of time	Kill unused features, polish core ones
Support tickets	20% of issues cause 80% of volume	Fix root causes, not symptoms
Salespeople	20% close 80% of deals	Study their methods, replicate or replace

Learning

Area	Typical 80/20 Finding	Action
Vocabulary	2,000 words = 80% of spoken language	Learn frequency lists first
Concepts	20% of concepts enable 80% of problems	Master fundamentals before advanced
Practice	20% of exercises build 80% of skill	Identify and repeat high-value drills
Books	20% of content has 80% of value	Read intros, conclusions, skim middle

Productivity

Area	Typical 80/20 Finding	Action
Tasks	20% of tasks produce 80% of results	Do high-impact first, eliminate rest
Time	20% of hours are 80% productive	Protect peak hours, batch low-value
Meetings	20% of meetings matter	Cancel the rest, send updates instead
Email	20% of emails need response	Process in batches, auto-archive rest

How to Find YOUR 80/20

Step 1: List Everything

Write down ALL activities in the area you're analyzing:

• What do you spend time on?
• What generates results?
• What costs money/energy?

Step 2: Measure Impact

For each activity, estimate:

• Input: Time, money, or energy spent (% of total)
• Output: Results generated (% of total)
• Ratio: Output ÷ Input

Example:

Activity	Input (%)	Output (%)	Ratio
Cold email	30%	5%	0.17
Referrals	10%	45%	4.5
Content	25%	30%	1.2
Paid ads	35%	20%	0.57

Step 3: Rank and Cut

1. Double down: Top 20% by ratio (Referrals in example)
2. Optimize: Middle 40% (Content, Paid ads)
3. Eliminate: Bottom 40% (Cold email)

Step 4: Validate with Data

Don't trust gut alone:

• Pull actual revenue by customer
• Track actual time by activity
• Measure actual results by channel

Output Format

# 80/20 ANALYSIS: [AREA]

## Data Summary

| Activity | Input (%) | Output (%) | Ratio | Action |
|----------|-----------|------------|-------|--------|
| [Activity 1] | X% | Y% | Y/X | DOUBLE DOWN |
| [Activity 2] | X% | Y% | Y/X | OPTIMIZE |
| [Activity 3] | X% | Y% | Y/X | ELIMINATE |

## Vital 20%

### 1. [Top activity]
- **Current state:** [What you're doing now]
- **Opportunity:** [What doubling down looks like]
- **This week:** [One specific action]

### 2. [Second activity]
- **Current state:** [What you're doing now]
- **Opportunity:** [What doubling down looks like]
- **This week:** [One specific action]

## Eliminate

- [Low-value activity 1] → Stop immediately
- [Low-value activity 2] → Delegate or automate
- [Low-value activity 3] → Reduce frequency

## Expected Impact

- **Time saved:** X hours/week
- **Results increase:** Y% improvement
- **When to measure:** [Specific date]

Conversation Starter

Use AskUserQuestion to begin:

"I'll help you find the 20% of activities driving 80% of your results.

What area do you want to analyze?

• Business (revenue, customers, products)
• Learning (skill, subject, language)
• Productivity (time, tasks, energy)
• Other (describe)"

Then ask:

1. "What activities/inputs are involved?" (Get the full list)
2. "What results/outputs matter?" (Define success)
3. "Do you have data, or should we estimate?" (Quantify)