Firstly you need to select all sheets. To do this, click on the first tab (sheet) and then go on to the last tab while pressing Shift + Left click. You will know that the tabs are all selected as they ...

Microsoft Excel 2010 provides a formula for calculating the average value from multiple worksheets in a workbook. Before you apply this formula, check that each worksheet is formatted the same way.

Microsoft Windows may get all the press coverage, but when you want to get real work done, you turn your attention to the applications that run on it. And if you use spreadsheets, that generally means ...