Final answer:
A data marker is a value that originates in a worksheet cell and is represented in a chart. Understanding data markers is important because they allow you to see the specific values and trends in your data when interpreting a chart.
Step-by-step explanation:
A data marker is a value that originates in a worksheet cell and is represented in a chart. This statement is true.
Data markers in a chart hold the actual values that are being graphed or represented. For example, if you have a chart that shows the sales of different products over time, the data markers would be the values that indicate the sales numbers for each product at different points in time.
Understanding data markers is important because they allow you to see the specific values and trends in your data when interpreting a chart.