Many of these errors start long before you click "Insert." ...

PivotTables can do more than you think, from splitting reports by category to calculating unique counts and percentage growth ...

When analyzing grouped data, bypass complex functions and use a Microsoft Excel PivotTable. The article How to return first and last times from timestamps in Microsoft Excel uses dynamic array ...

Have you ever spent hours wrestling with Excel formulas, only to end up with a tangled web of cells that’s nearly impossible to decipher? For many, this is the reality of data analysis: a painstaking ...

In Microsoft Excel, learn how to report time values by the hour using the underlying date serial value. Grouping records by dates or time is easy in Microsoft Excel, but it doesn’t make a great report ...

Have you ever stared at a PivotTable, wondering how to extract deeper insights without endlessly tweaking your source data? PivotTables are incredibly powerful tools, but sometimes the default options ...

Q: How do I add a percentage-of-total column in a PivotTable in Excel 2010? Your PivotTable will now display the same two columns of data both numerically and as a percentage of total, as pictured ...