A market research firm has data sets based on surveys. A data analyst wants to know if any outliers are present in a data set. Which of the following would be the BEST method to examine the numerical variables in the data set visually and find any outliers?

A. Plot the linear correlations between each pair of variables and look for unusual relationships

B. Create a bar chart for each variable and look for any distributions that are unusual.

C. Build a scatter plot of each variable and look for observations that are out of place.

D. Order each variable in a spreadsheet from lowest to highest and look for unusual numbers at the beginning or at the end of the list.








 

Suggested Answer: C





This question is in DA0-001 CompTIA Data+ Exam
For getting CompTIA Data+ Certificate



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