The mid point of a class is called________.

Answer

To solve the question, we need to understand the concept of the midpoint of a class in statistics. Here’s the step-by-step solution:

### Step-by-Step Solution:

1. **Identify the Class Limits**:
- A class in statistics is defined by a lower limit (L) and an upper limit (U). For example, if we have a class interval of 10-20, then L = 10 and U = 20.

2. **Calculate the Midpoint**:
- The midpoint (or class mark) of the class is calculated using the formula:
\[ \text{Midpoint} = \frac{L + U}{2} \]
- This formula means that you add the lower limit and upper limit together and then divide by 2.

3. **Define the Midpoint**:
- The midpoint of the class is commonly referred to as the "class mark".

4. **Conclusion**:
- Therefore, the answer to the question is that the midpoint of a class is called the **class mark**.

### Final Answer:
The midpoint of a class is called **class mark**.

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