import data problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg123239] import data problem*From*: Harry <hvdosten at gmail.com>*Date*: Mon, 28 Nov 2011 05:54:29 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

Hi out there, I don't understad what happens with my data... There are 401 lines of input data). The last lines are: ... 19.7999992 -9.13599968 19.8500004 -11.6960001 19.8999996 -11.9519997 19.9500008 -12.2080002 20. -12.9759998 Importing these data in Mathematica via data = Import["00000.dat", "Table"] and everything seems to be ok. But if I try this: y = LinearModelFit[data, {x, x^2}, x] there is the error message: LinearModelFit::ivar: "{20.05} is not a valid variable" and the output is printed as: ... {19.85, -11.696}, {19.9, -11.952}, {19.95, -12.208}, {20., -12.976}}, {20.05, 402.003}, 20.05] Why are the data extended to {20.05, 402.003}, 20.05]? Thanks a lot for your hint. I hope that this question ist not too stupid, but I feel I am standing in front of a wall and don't know how to overcome this... Thanks a lot. Harald

**Follow-Ups**:**Re: import data problem***From:*"Dr. Harald von der Osten" <hvdosten@gmail.com>

**Re: import data problem***From:*DrMajorBob <btreat1@austin.rr.com>