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A Comparison of Cost Models for Fighter Aircraft

Abstract : One of the subjects for discussion among persons interested in parametric cost models is that of the degree of homogeneity required in the data sample. Intuitively, it seems obvious that we should get better estimates of fighter aircraft cost from a fighter aircraft model than from a model derived from a sample including the KC-135 tanker and the C-5 cargo aircraft. This paper describes an exercise in which a fighter-only model was developed, not to settle a methodological issue but to assist in a specific cost-estimating problem. (Author)