One-Dimensional Diagrams – Simple, Bar & Component Bar 📏📊

One-dimensional diagrams represent only one dimension — length.

Examples:

• Bar diagrams
• Component bar diagrams
• Multiple bar diagrams

Bar length represents the magnitude of data.

Why Use One-Dimensional Diagrams?

✔ Simple
✔ Clear
✔ Best for comparisons
✔ Useful for discrete data
✔ Easy to construct

1. Simple Bar Diagram 📘

What It Shows:

• Comparison of one variable across different categories.

Example:

A simple bar diagram compares sales across years.

Features:

• Equal width
• Length proportional to value
• Best for simple comparison

2. Multiple Bar Diagram 📚

Used when two or more variables are compared simultaneously.

Example:

Sales of Product A & B (2021–23)

Two bars for each year → A & B.

Uses:

• Company vs competitor
• Male vs female literacy
• Rural vs urban statistics

3. Component Bar Diagram 🧱

Shows sub-parts of a total.

Each bar is divided into components.

Example:

A company's total expenditure:

Total = 100 lakh
The bar is divided into 40 + 20 + 10 + 30.

ASCII Diagram — One-Dimensional Diagrams

Simple Bar
↓
Multiple Bar
↓
Component Bar

Advantages ✔️

• Clear comparison
• Easy to draw
• Visually appealing
• Useful for categorical data

Limitations ❌

• Not suitable for continuous data
• Cannot show too many categories
• Not very precise

Summary ✨

One-dimensional diagrams include:

• Simple bar diagrams
• Multiple bar diagrams
• Component bar diagrams

They compare values using length as the primary dimension.

Quiz Time! 🎯