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Data Type Conversion

Lesson 3: Data Type Conversion

Data type conversion ensures each column is stored in the correct format for analysis. Sales values must be numeric, and dates must be recognized as date-time objects.

In this project, numeric conversions are required for sales, quantities, prices, and MSRP so calculations work correctly. Order dates are converted to date-time format to support monthly and quarterly trend analysis.

  • Accurate Calculations: Enables correct revenue and quantity computations.
  • Time-Based Analysis: Allows grouping by month, quarter, and year.
  • Error Prevention: Avoids plotting and aggregation issues caused by incorrect types.

Correct data types are essential for reliable analysis.