1. What Are Class Boundaries?

Class boundaries are the precise numbers that separate consecutive classes in a frequency distribution. They eliminate any gaps between classes and are used to ensure continuous data representation.

2. How Does the Calculator Work?

The calculator uses the class boundaries formula:

Where:

• Lower Limit — The smallest value in the class interval
• Class Width — The size of each class interval

Explanation: The boundary is calculated by adding and subtracting half the class width to/from the class limits.

3. Importance of Class Boundaries

Details: Class boundaries are essential for creating continuous histograms and accurately representing grouped data, especially when dealing with discrete data that needs to be displayed as continuous.

4. Using the Calculator

Tips: Enter the lower limit of your class interval and the class width. The calculator will determine the exact boundaries for that class.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between class limits and boundaries?
A: Class limits are the stated minimum and maximum values, while boundaries are the actual dividing points between classes.

Q2: When should I use class boundaries?
A: Use boundaries when creating histograms or when you need precise division points between classes.

Q3: How do boundaries handle discrete vs. continuous data?
A: Boundaries convert discrete data into continuous intervals by accounting for possible measurement precision.

Q4: What if my class width is zero?
A: Class width must be greater than zero for meaningful boundaries.

Q5: Can boundaries be negative?
A: Yes, if your data includes negative values, boundaries can be negative too.