Frequency Polygon Calculator
Create frequency polygons and ogive graphs from your data with statistical analysis
Create Frequency Polygon
Enter up to 50 values separated by commas
Example: Student Test Scores
Sample Data
Test Scores: 85, 92, 78, 85, 90, 87, 85, 93, 89, 85, 88, 91, 86, 84, 87
Expected Results
• Most frequent score: 85 (appears 4 times)
• Score range: 78 to 93 points
• Frequency polygon will show distribution pattern
• Ogive graph will show cumulative frequency progression
Key Features
Frequency Polygon
Line graph connecting frequency points
Ogive Graph
Cumulative frequency distribution
Statistics
Mean, median, mode, and more
Frequency Table
Detailed distribution breakdown
Usage Tips
Enter up to 50 numerical values separated by commas
Choose grouped data for large datasets with many unique values
Use ungrouped data for smaller datasets with distinct values
Toggle between frequency polygon and ogive graph views
Understanding Frequency Polygons
What is a Frequency Polygon?
A frequency polygon is a line graph that displays the frequency distribution of a dataset. It's created by plotting points representing the frequency of each value or class interval and connecting these points with straight lines.
Key Characteristics
- •Shows distribution shape and patterns
- •Easy to compare multiple distributions
- •Highlights peaks (modes) and trends
- •Alternative to histograms for continuous data
Ogive Graph (Cumulative Frequency)
An ogive is a cumulative frequency polygon that shows how frequencies accumulate. Each point represents the total number of observations up to that value.
Applications
- •Quality control in manufacturing
- •Educational assessment analysis
- •Market research and surveys
- •Scientific data visualization
Frequency Polygon vs Histogram
- • Line graph connecting points
- • Shows continuous flow of data
- • Better for comparing distributions
- • Emphasizes trends and patterns
- • Bar chart with adjacent rectangles
- • Shows discrete intervals
- • Better for showing exact frequencies
- • Emphasizes individual class frequencies