How should a business analyst address an error when a bar chart does not display order information correctly after creating a calculated field?

When a bar chart does not display order information correctly after the creation of a calculated field, addressing the data type of the field becomes crucial. The correct choice of changing the field type to Date in the format 'YYYY-MM-DD' is particularly relevant here because accurate date formats are critical for visualizing time-based data correctly. In bar charts, if the order information is intended to represent a timeline—such as sales over different days—it's vital that the date is recognized properly by the Qlik Sense engine.

Using the 'YYYY-MM-DD' format ensures that the data is interpreted as a date type, allowing for chronological sorting and accurate representation on the X-axis of the bar chart. If data is incorrectly formatted, it might confuse the visualization engine, leading to misrepresentation or no display at all.

On the other hand, other options would not effectively resolve the issue at hand. Changing the field type to String would lead to treating the dates merely as text, hindering any chronological analysis. Removing the calculated field could eliminate the necessary data insights being calculated, and adjusting color settings would not address an underlying data interpretation problem, leaving the inaccurate display unresolved. Thus, ensuring the field type is correctly set to Date is essential for the intended visualization to function correctly.