I have done a linear regression with 5 IVs and 1 DV.

In the output under coefficients, it shows one of the variables is not signficant (.825).

However if I do a regression with just this IV against the DV, under coefficients it is significant (.000).

Does this mean that the variable does not contribute within the group to the DV, however when taken alone it is? I am a little confused about how to interpret this?

Many thanks,

Rama