  We perform an uncertainty estimate of quadrupole moments and B(E2) transition
rates that inform nuclear collectivity. In particular, we study the low-lying
states of 6Li and 12C using the ab initio symmetry-adapted no-core shell model.
For a narrow standard deviation of approximately 1% on the low-energy constants
which parametrize high-precision chiral potentials, we find output standard
deviations in the collective observables ranging from approximately 3-6%. The
results mark the first step towards a rigorous uncertainty quantification of
collectivity in nuclei that aims to account for all sources of uncertainty in
ab initio descriptions of challenging collective and clustering observables.
