Is a legend mandatory on a chart?

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Multiple Choice

Is a legend mandatory on a chart?

A legend on a chart is essential because it tells readers what each color, symbol, or pattern represents. It acts as the key that maps visual cues to data series or categories, allowing anyone viewing the chart to interpret it accurately without guessing. This clarity is especially important when multiple data series or categories are shown, since without a legend the meaning of colors or markers can be ambiguous and lead to misinterpretation. In many standards and practice tests, including a legend is required to ensure consistency and readability, making it the best choice. While there are rare cases where labels on the chart itself might suffice, the general expectation is that a legend is present to avoid confusion.

A legend on a chart is essential because it tells readers what each color, symbol, or pattern represents. It acts as the key that maps visual cues to data series or categories, allowing anyone viewing the chart to interpret it accurately without guessing. This clarity is especially important when multiple data series or categories are shown, since without a legend the meaning of colors or markers can be ambiguous and lead to misinterpretation. In many standards and practice tests, including a legend is required to ensure consistency and readability, making it the best choice. While there are rare cases where labels on the chart itself might suffice, the general expectation is that a legend is present to avoid confusion.

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