  With the advent of the COBE detection of fluctuations in the Cosmic Microwave
Background radiation, the study of inhomogeneous cosmology has entered a new
phase. It is now possible to accurately normalize fluctuations on the largest
observable scales, in the linear regime. In this paper we present a
model-independent method of normalizing theories to the full COBE data. This
technique allows an extremely wide range of theories to be accurately
normalized to COBE in a very simple and fast way. We give the best fitting
normalization and relative peak likelihoods for a range of spectral shapes, and
discuss the normalization for several popular theories. Additionally we present
both Bayesian and frequentist measures of the goodness of fit of a
representative range of theories to the COBE data.
