Modeling Utilities is a collection of utilities that are designed to assist in the data cleaning and pre-processing stages of data analysis. Each utility has exploratory tools to give you a more thorough understanding of your data. With Modeling Utilities, you can do the following:
• Explore outliers in both the univariate and multivariate cases.
• Explore and impute missing values in your data.
• Explore and find unusual features or patterns in your data.
Figure 21.1 Multivariate k-Nearest Neighbor Outlier Example