10.8.2. Data Cleaning and Editing

Try these first

1. 1.

   What is data cleaning?

   Hint

   Think about why data needs to be refined.

2. 2.

   What does noise refer to in data?

   Hint

   Consider what can disrupt your data readings.

3. 3.

   What is the primary goal of data cleaning in hydrographic surveys?

   • To collect more data
   • To identify and remove errors
   • To create new charts

   Hint

   Think about what a clean dataset means for navigation.

4. 4.

   True or False: Manual verification is unnecessary if automated processes are in place.

   • True
   • False

   Hint

   Consider if machines always get everything right.

5. 5.

   You have a dataset with several recorded depths, some of which are inconsistent due to equipment errors. List a detailed procedure on how you'd clean this data.

   Hint

   Consider methods that ensure data quality.

6. 6.

   Imagine you produce a hydrographic map after data cleaning, but an error is still present. Discuss how you would trace back the issue to improve future data collection.

   Hint

   Think about where errors tend to creep into your process.