What combination allows for easy viewing of sum and average opportunity amounts by dimensions?

The option that enables easy viewing of sum and average opportunity amounts by dimensions is a dot plot showing dimensions on one axis. This method allows for a straightforward comparison of data points across different dimensions, making it easier to visualize both individual opportunity amounts and their summarized statistics, like sums and averages.

In a dot plot, each data point is represented as a dot, and when dimensions are plotted along one axis, it creates a clear visual representation of how each dimension corresponds to the value of interest. This format is especially useful when dealing with categorical data, as it allows for quick identification of trends and variations within the data, facilitating analysis and comprehension of the data in context.

Other options, such as histograms or scatter plots, have their respective uses but are not as effective for the specific purpose of summarizing and comparing opportunity amounts directly by dimensions. Stacked bar charts can provide an aggregated view, but they might not offer the clarity in terms of sum and averages as efficiently as a dot plot can when dealing with varied dimensions.