What do we mean by accuracy?

Explanation

**Step-by-Step Solution:**

1. **Definition of Accuracy**:
Accuracy refers to how close a measured value is to the actual or true value of the quantity being measured. It indicates the correctness of a measurement.

2. **Understanding True Value**:
The true value is the actual value that we aim to measure. For example, if we are measuring a person's height, the true value would be the exact height of that person.

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