From the Fields list, you can see how many of the documents in the Documents table contain a particular field, what the top 5 values are, and what percentage of documents contain each value.
Data can be visualized in various ways. The quick visualize can only be applied to aggregatable fields. The keyword fields can be visualized and they are available in the side bar if we uncheck "Hide missing fields".
To view field data statistics, click the name of a field in the Fields list.