4.3.1 - Why Process Data?
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Practice Questions
Test your understanding with targeted questions
What is data cleaning?
💡 Hint: Think about the first step in preparing data for analysis.
Name a common technique used in data transformation.
💡 Hint: Consider how we can standardize numerical ranges.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of data processing?
💡 Hint: Think about what happens after you collect data.
True or False: Data integration involves combining data from several sources.
💡 Hint: Consider how different departments might share data.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A local school has to cleanup data from a student records database that contains several errors and duplicates. Describe the steps they should take for data cleaning and explain the rationale behind each step.
💡 Hint: Consider the importance of accuracy for future analysis.
You are provided with a dataset that has numerical data for test scores, but there are missing values marked as 'NULL.' Propose a method to handle these missing values while justifying your choice.
💡 Hint: Think about balancing the dataset while ensuring it remains representative.
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