Students of Statistics Department

07/04/2026

30/03/2026

📊 TYPES OF GRAPHS IN STATISTICS

📌 Introduction

Graphs are visual tools used in statistics to present data in a simple and clear way. They help us understand information quickly, compare values, and identify patterns or trends easily. Different types of graphs are used depending on the nature of data and the purpose of analysis.

🔹 Types of Graphs in Statistics

1️⃣ Bar Graph

▪️A bar graph uses rectangular bars to represent data.
▪️Each bar shows a category.
▪️The height or length of the bar represents the value.

👉 Used for comparing different categories.

2️⃣ Line Graph

▪️A line graph connects data points with a line.
▪️It shows changes over time.

👉 Used to identify trends and patterns.

3️⃣ Pie Chart

▪️A pie chart is a circular graph divided into sectors.
▪️Each sector represents a percentage or proportion.

👉 Used to show parts of a whole.

4️⃣ Histogram

▪️A histogram represents continuous data.
▪️Bars are adjacent (no gaps).

👉 Used to show frequency distribution.

5️⃣ Scatter Plot

▪️A scatter plot uses dots to represent data points.
▪️It shows the relationship between two variables.

👉 Used to study correlation.

6️⃣ Frequency Polygon

▪️It is formed by joining midpoints of class intervals.
▪️It shows the shape of the distribution.

👉 Used to understand data trends.

7️⃣ Box Plot (Box and Whisker Plot)

▪️It shows median, quartiles, and spread of data.
▪️Helps identify outliers.

👉 Used for data summarization.

🛑 Conclusion

Different types of graphs make statistical data easy to understand and analyze. Choosing the right graph helps in better interpretation and decision-making.

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Important 🌹