  The characterization of the quantum ensemble is a fundamental issue in
quantum information theory and foundations. The ensemble is also useful for
various quantum information processing. To characterize the quantum ensemble,
in this article, we generalize the coherence measure of a state to the quantum
ensemble. Exploiting the fidelity and affinity between the ensemble, we propose
a quantumness quantifier for the quantum ensemble. It is shown that the
proposed quantifier satisfies the necessary axioms of a bonafide measure of
quantumness. Finally, we compute the quantumness of a few well-known ensembles.
