What are personal errors ?

Explanation

### Step-by-Step Solution:

1. **Definition of Personal Errors**: Personal errors are mistakes that occur due to human factors. They are not inherent to the instruments or the experimental setup but arise from the actions or inactions of the person conducting the measurement.

2. **Causes of Personal Errors**:
- **Human Carelessness**: Personal errors often stem from a lack of attention or carelessness on the part of the individual. This can include distractions or a failure to follow proper procedures.
- **Improper Instrument Setting**: If the measuring instruments are not set up correctly, this can lead to inaccurate measurements. This includes not calibrating the instrument properly or not adjusting it according to the required parameters.
- **Incorrect Reading**: Taking down the wrong readings from the instruments can also lead to personal errors. This may occur due to misinterpretation of the scale or misreading the values.
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