  In the Sun, the properties of acoustic modes are sensitive to changes in the
magnetic activity. In particular, mode frequencies are observed to increase
with increasing activity level. Thanks to CoRoT and Kepler, such variations
have been found in other solar-type stars and encode information on the
activity-related changes in their interiors. Thus, the unprecedented long-term
Kepler photometric observations provide a unique opportunity to study stellar
activity through asteroseismology. The goal of this work is to investigate the
dependencies of the observed mode frequency variations on the stellar
parameters and whether those are consistent with an activity-related origin. We
select the solar-type oscillators with highest signal-to-noise ratio, in total
75 targets. Using the temporal frequency variations determined in Santos et al.
(2018), we study the relation between those variations and the fundamental
stellar properties. We also compare the observed frequency shifts with
chromospheric and photometric activity indexes, which are only available for a
subset of the sample. We find that frequency shifts increase with increasing
chromospheric activity, which is consistent with an activity-related origin of
the observed frequency shifts. Frequency shifts are also found to increase with
effective temperature, which is in agreement with the theoretical predictions
for the activity-related frequency shifts by Metcalfe et al. (2007). Frequency
shifts are largest for fast rotating and young stars, which is consistent with
those being more active than slower rotators and older stars. Finally, we find
evidence for frequency shifts increasing with stellar metallicity.
