What are two effective ways to display ratio data?

The choice highlighting arrays and frequency distributions is correct because both methods are well-suited for showcasing ratio data. Arrays allow for a systematic arrangement of data points, which facilitates an organized view of the information. This arrangement can help in identifying patterns, trends, or specific values within the dataset.

Frequency distributions are particularly effective as they provide a summary of how often each value occurs within the dataset, thereby highlighting the distribution characteristics of the ratio data. They can illustrate the spread and concentration of data points, giving valuable insights into the central tendencies and variability of the data.

While other options present valid means of data presentation, they may not cater specifically to the nuances and requirements of ratio data as effectively as arrays and frequency distributions do. Charts and graphs, histograms and pie charts, and tables and flowcharts are useful for different types of data representation, but they may not always convey the detailed numerical relationships inherent in ratio data as clearly as the selected methods.