---
title: Bucket System Estimation
description: "# **Bucket System Estimation** The **Bucket System** is an Agile estimation technique used to quickly and collaboratively estimate a large number of user stories or tasks. It is especially useful in situations where there are many items to be estimated…"
url: "https://vinothqaacademy.com/docs/bucket-system-estimation/"
updated: "2024-08-27"
category: Agile
tags:
  - Agile
---

# Bucket System Estimation

# **Bucket System Estimation**

The **Bucket System** is an Agile estimation technique used to quickly and collaboratively estimate a large number of user stories or tasks. It is especially useful in situations where there are many items to be estimated and the team wants to avoid the time-consuming process of estimating each item individually. The technique involves sorting tasks into predefined "buckets" that represent different levels of effort or complexity.

## **Key Characteristics:**

**- Quick and Efficient**: Suitable for estimating a large number of items.

-**Collaborative**: Encourages team participation and consensus.

-**Relative Sizing**: Focuses on comparing tasks to each other rather than assigning exact values.

## **Steps of Bucket System Estimation:**

**1. Preparation**:

Define a set of buckets that represent different levels of effort or complexity (e.g., 1, 2, 3, 5, 8, 13, 20).

Prepare the list of user stories or tasks to be estimated.

**2**. **Initial Placement**:

Randomly select a user story or task and place it in a bucket that the team agrees represents its effort or complexity.

**3**. **Review and Adjustment**:

Sequentially review each user story or task.

Compare it with the items already placed in the buckets and decide if it should go into a higher, lower, or the same bucket.

Adjust placements as necessary based on team discussions and consensus.

**4**. **Final Review**:

Once all items are placed in buckets, review the distribution to ensure consistency and adjust if needed.

## **Example of Bucket System Estimation for an E-Commerce Website**

**Scenario**: The team is estimating the effort required for multiple features of an e-commerce website project.

**Participants**:

-**Product Owner**: Eva

-**Development Team**: Alice (Frontend Developer), Bob (Backend Developer), Carol (QA Engineer)

-**Scrum Master**: Dave

#### **User Stories:**

**User Story 1**: Registration and Login

**User Story 2**: Product Search and Filters

**User Story 3**: Product Reviews

**User Story 4**: Order Tracking

**User Story 5**: Checkout Process

**User Story 6**: Wishlist Feature

#### **Buckets:**

1- (Very Small)

2- (Small)

3 - (Medium)

5 - (Large)

8- (Very Large)

13 - (Extra Large)

20 - (Huge)

## **Bucket System Estimation Session:**

**1. Preparation**:

Buckets are labeled and placed visibly for the team.

The list of user stories is prepared.

**2. Initial Placement**:

**Randomly selected story**: Registration and Login.

The team discusses and places it in the **3 (Medium)** bucket.

**3. Review and Adjustment**:

- **Product Search and Filters**:

**Alice**: "This is more complex than Registration and Login due to multiple filters."

The team agrees and places it in the **5 (Large)** bucket.

- **Product Reviews**:

**Bob**: "Adding reviews is less complex than Registration and Login."

The team places it in the **2 (Small)** bucket.

- **Order Tracking**:

**Carol**: "This is similar in complexity to Registration and Login."

The team places it in the **3 (Medium)** bucket.

-**Checkout Process**:

**Alice**: "This is quite complex, involving multiple steps and integrations."

The team places it in the **8 (Very Large)** bucket.

-**Wishlist Feature**:

**Bob**: "This is straightforward, but slightly more complex than Product Reviews."

The team places it in the **3 (Medium)** bucket.

**4. Final Review:**

The team reviews all placements for consistency.

Minor adjustments are made to ensure all items are accurately categorized.

## **Summary of Bucket System Estimation:**

| **User Story ID** | **Description** | **Bucket (Effort)** |
| --- | --- | --- |
| PBI-001 | Registration and Login | 3 (Medium) |
| PBI-002 | Product Search and Filters | 5 (Large) |
| PBI-003 | Product Reviews | 2 (Small) |
| PBI-004 | Order Tracking | 3 (Medium) |
| PBI-005 | Checkout Process | 8 (Very Large) |
| PBI-006 | Wishlist Feature | 3 (Medium) |

## **Benefits of Bucket System Estimation:**

**Efficiency**: Allows for quick estimation of a large number of items.

**Collaboration**: Encourages team discussion and consensus.

**Relative Comparison**: Helps teams understand the relative effort required for different tasks.

**Scalability**: Suitable for both small and large projects.

## **Conclusion**

The Bucket System is a practical and efficient technique for estimating the effort or complexity of multiple user stories or tasks in Agile projects. By sorting items into predefined buckets, teams can quickly achieve a shared understanding of the relative effort required, facilitating better planning and prioritization. The example of estimating various features for an e-commerce website demonstrates how the Bucket System helps teams collaboratively and effectively manage their workload.