In a frequency distribution, the width of each interval is generally the same for each interval. What is this property called?

• A. $\text{Equal class width}$
• B. $\text{Class midpoint}$
• C. $\text{Relative frequency}$
• D. $\text{Cumulative frequency}$

Answer: (A)

Verified step by step guidance

1. Understand that in a frequency distribution, data is grouped into intervals or classes to organize and summarize the data effectively.
2. Recognize that when each interval in the frequency distribution has the same size or length, this characteristic is important for consistency and comparability across classes.
3. This property, where all intervals have the same width, is known as having 'equal class width'.
4. Other terms like 'class midpoint', 'relative frequency', and 'cumulative frequency' refer to different concepts: the midpoint is the center value of a class, relative frequency is the proportion of observations in a class, and cumulative frequency is the running total of frequencies up to a certain class.
5. Therefore, the property describing intervals of the same size in a frequency distribution is called 'equal class width'.