The dollar sign ($) is used in Excel to indicate an absolute reference to a cell. This means that the reference will not change when the formula is copied or moved to another location in the worksheet. To create an absolute reference, simply precede the cell reference with a dollar sign. For example, the formula =$A$1 will always refer to the value in cell A1, even if the formula is copied to another cell.
There are several benefits to using absolute references in Excel. First, they can help to prevent errors when formulas are copied or moved. For example, if you have a formula that calculates the sum of a range of cells, and you copy the formula to another cell, the range of cells that the formula refers to will change if the original range of cells is not absolute. This could lead to incorrect results.
