Question 2 What are the three steps involved in modelling a set of any geophysical data? Write down what is a definition of a \"good fit\" of N data in terms of the chisquared x2 misfit function, and what this effectively means in terms of our model fit for data with random and Gaussian errors? If we have residuals of model t (that is, subtracting the observed data points from the modelled data points) that are random and Gaussian in distribution, but 98 > N, what might that imply in terms of our error estimates