Spreadsheet::Engine::Function::STDEVP - Spreadsheet funtion STDEVP()

  =STDEVP(list_of_numbers)

This returns the standard deviation.

We calculate as per Knuth "The Art of Computer Programming" Vol. 2 3rd edition, page 232

This is a Modified Version of code extracted from SocialCalc::Functions in SocialCalc 1.1.0

Portions (c) Copyright 2005, 2006, 2007 Software Garden, Inc. All Rights Reserved.

Portions (c) Copyright 2007 Socialtext, Inc. All Rights Reserved.

Portions (c) Copyright 2007, 2008 Tony Bowden

The contents of this file are subject to the Artistic License 2.0; you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.perlfoundation.org/artistic_license_2_0