In Excel 2010 a review of statistical accuracy of functions and related work was done. Here is a summary of the work: http://office.microsoft.com/en-us/excel-he

In Excel 2010 a review of statistical accuracy of functions and related work was done. Here is a summary of the work: http://office.microsoft.com/en-us/excel-help/what-s-new-changes-made-to-excel-functions-HA010355760.aspx http://office.microsoft.com/en-us/excel-help/what-s-new-chan... Its also worth noting that Excel only guarantees a certain level of accuracy (15 digits if im not mistaken). In cases where this is highly important SSPS, MatLab , etc should be used since they offer a higher degree of accuracy.