What information can one obtain from frequency tables produced by PROC UNIVARIATE?

The correct answer reflects that frequency tables produced by PROC UNIVARIATE provide valuable insights into the distribution of values within specific intervals. When using PROC UNIVARIATE, frequency tables allow you to see how the data is spread across different categories or ranges. This can include counts of how many observations fall into each interval, helping to visualize the distribution and understand the underlying patterns in the data. The frequency tables also support analysis such as identifying skewness, modality, and outliers in the dataset.

The other options present information typically analyzed through different statistical methods or procedures. While mean values, confidence intervals, and variance are important statistical measures, they are not the primary output of frequency tables in PROC UNIVARIATE. Instead, understanding the distribution of values within designated intervals is the focus of frequency tables, making this the correct choice.