Results are reported of extensive calculations on atomic photoabsorption cross sections by the statistical method in various approximations, based on developments presented in previous papers. A closely spaced family of photoabsorption cross sections emerges which, on scaling with regard to atomic numbers, represents in an unified manner the absorption cross sections of all atoms over wide frequency ranges. A limited search into detailed spectral properties of atoms reveals everywhere some, and in certain instances strong evidence for collective effects in the response of atoms to external disturbances.