Exam DA0-001 topic 1 question 185 discussion

The best method to visually examine numerical variables in a dataset and identify outliers is option C: Build a scatter plot of each variable and look for observations that are out of place. Scatter plots provide a visual representation of the relationship between two variables, making it easier to identify any data points that deviate significantly from the overall pattern. Outliers appear as data points that are distant from the bulk of the data points in the scatter plot. Options A and B may provide some insight into the data, but they are not specifically designed to identify outliers. Option D, ordering each variable and looking for unusual numbers, is not as effective as visual methods like scatter plots for identifying outliers, as it may not capture the complex relationships between variables.