The length of a straight line is measured a number of times by a number of observes . The following are the results of these measurements. Decide precision and accuracy.
Actual length = 3.785 cm `pm 0.001 ` cm
1st set of measurement 3.8 cm , 3.9 cm , 3.7 cm
2nd set of measurements 3.478 cm , 3.479 cm , 3.478 cm , 3.478 cm , 3.479 cm
3 rd set of measurement 3.55 cm , 3.65 cm , 3.45 cm , 3.45 cm , 3.35 cm 4th set of measurements 3.784 cm , 3.785 cm , 3.784 cm , 3.785 cm , 3.784 cm

Explanation

To determine the precision and accuracy of the given sets of measurements, we will analyze each set in relation to the actual length provided (3.785 cm ± 0.001 cm).

### Step 1: Understanding Precision and Accuracy
- **Precision** refers to how close the measurements are to each other.
- **Accuracy** refers to how close the measurements are to the actual value.

### Step 2: Analyze Each Set of Measurements
1. **First Set of Measurements: 3.8 cm, 3.9 cm, 3.7 cm**
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