Question

what is used to focus the reader’s attention on a single data series

Answer 1

Answer:

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Answer 2

A single-series chart is defined by a single list of data points, each with a corresponding value. For example, a monthly sales chart for a single year contains one data point for each of the twelve months; the sales volume.

Data labels are text elements that describe individual data points. Displaying data labels. You may display data labels for all data points in the chart, for all data points in a particular series, or for individual data points. For information, see Displaying Data Labels.

So,

Data labels are used to focus the reader’s attention on a single data series.