Column Quality Quiz

Quiz covering Profile and Clean the Data

Questions in this quiz

A preview of the 5 questions covered. Start the quiz above to answer them, check your score, and read the explanations.

1. 1

   In Power BI's Power Query Editor, which three metrics are displayed in the Column Quality view?

2. 2

   You are importing a CSV file and notice a high 'Error' percentage in a numeric column. What is the most likely cause of these errors?

3. 3

   If you apply the 'Remove Errors' transformation on a specific column in Power Query, what is the result on your dataset?

4. 4

   While profiling a column, you see that it is 100% 'Valid' but has 0 'Unique' values and only 1 'Distinct' value. What does this indicate about the data?

5. 5

   You are profiling a dataset with 100,000 rows. The Column Quality bar shows 0% Empty, but you know there are missing values in the bottom half of the file. Why is the profile showing 0% Empty?