You can make a line graph in Excel in a matter of seconds using data already entered into the spreadsheet.

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

Here’s one bit of weirdness that hasn’t changed in Office 2007: When you create a bar chart from a column of data in Excel it plots the data series in reverse order, starting with the value at the ...