Cells in Excel are referred to using relative or absolute references. A formula with relative references changes when the cell's position does. If, for example, a cell has a formula "=A1" and you copy ...

The calculation in the first row is correct, but it becomes zero from the second row when copied downward. The quantity ...

In Excel, the calculation in the first row is correct, but when I copy it down, the second row becomes 0. Even if I recreate ...

In Excel, common causes include using relative references in formulas (so the rule shifts unexpectedly), mismatched data types (e.g., numbers stored as text), or having multiple overlapping ...