Question

The length of the class intervals of the classes, 2 - 5, 5 - 8, 8 - 11, ... is

• A. 2
• B. 3
• C. 4
• D. 3.5

Hint:

The length of a class interval is simply the size of the range it covers. Be careful not to confuse it with the midpoint of the class.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The length (or size or width) of a class interval is the difference between the upper class limit and the lower class limit.

Step 2: Key Formula or Approach:
Class Length = Upper Limit - Lower Limit

Step 3: Detailed Explanation:
Let's calculate the length for each given class interval:
For the class 2 - 5:
Length = 5 - 2 = 3
For the class 5 - 8:
Length = 8 - 5 = 3
For the class 8 - 11:
Length = 11 - 8 = 3
The length is constant for all the given class intervals.

Step 4: Final Answer:
The length of the class intervals is 3.