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You have a sales dataset with inconsistent date formats and missing customer IDs. How can cleaning this data improve your Power BI report's accuracy and usability?

hard📝 Scenario Q15 of 15
Power BI - Data Cleaning with Power Query
You have a sales dataset with inconsistent date formats and missing customer IDs. How can cleaning this data improve your Power BI report's accuracy and usability?
AIgnoring inconsistencies will not affect report accuracy
BStandardizing dates and filling missing IDs ensures correct time analysis and customer grouping
CRemoving all rows with missing data is the only way to clean
DChanging date formats in visuals fixes data issues automatically
Step-by-Step Solution
Solution:
  1. Step 1: Understand impact of inconsistent dates and missing IDs

    Inconsistent dates cause wrong time-based calculations; missing IDs prevent proper customer grouping.
  2. Step 2: Clean data by standardizing dates and filling missing IDs

    Cleaning fixes these issues, enabling accurate time analysis and grouping in reports.
  3. Final Answer:

    Standardizing dates and filling missing IDs ensures correct time analysis and customer grouping -> Option B
  4. Quick Check:

    Clean dates and IDs = Accurate, usable reports [OK]
Quick Trick: Fix dates and IDs before analysis for best results [OK]
Common Mistakes:
  • Assuming visuals fix data format issues
  • Deleting all rows with missing data unnecessarily
  • Ignoring data inconsistencies thinking no impact

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