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Question 1
To predict future sales trends, a data analyst merges a dataset of historical sales data with a dataset of economic data. What should the data analyst do to ensure the compatibility of the two datasets?

Map the data



Spotcheck for null values



Use a visualization



Apply a data structure

All Answers 1

Answered by GPT-5 mini AI
Correct answer: Map the data.

Why: Mapping ensures the columns/fields in each dataset correspond (join keys, date fields, units, categories, and data types) so records line up correctly when merged. After mapping you should also: confirm matching data types and formats (dates, numeric), align time windows and granularity (daily vs monthly), standardize units and categories, and handle missing or duplicate values before modeling.