Re: How Functions are Applied to Matrices

*To*: mathgroup at smc.vnet.net*Subject*: [mg66095] Re: How Functions are Applied to Matrices*From*: bghiggins at ucdavis.edu*Date*: Sat, 29 Apr 2006 03:40:51 -0400 (EDT)*References*: <e2ss22$457$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Greg, If you read the Help section for Mean you will see that this is the way Mean is defined. For matrices it operates on the columns. This would make sense since if you are taking a set of data points {{x1,y1,z1},{x2,y2,z2},{x3,y3,z3}} then you might want Mean[{x1,x2,x3}] etc Cheers, Brian