  Combined analyses of the Higgs boson production and decay rates as well as
its coupling strengths to vector bosons and fermions are presented. The
combinations include the results of the analyses of the $H\to\gamma\gamma,\,
ZZ^*,\, WW^*,\, Z\gamma,\, b\bar{b},\, \tau\tau$ and $\mu\mu$ decay modes, and
the constraints on the associated production with a pair of top quarks and on
the off-shell coupling strengths of the Higgs boson. The results are based on
the LHC proton-proton collision datasets, with integrated luminosities of up to
4.7 $\mathrm{fb}^{-1}$ at $\sqrt{s}=7$ TeV and 20.3 $\mathrm{fb}^{-1}$ at
$\sqrt{s}=8$ TeV, recorded by the ATLAS detector in 2011 and 2012. Combining
all production modes and decay channels, the measured signal yield, normalised
to the Standard Model expectation, is $1.18^{+0.15}_{-0.14}$. The observed
Higgs boson production and decay rates are interpreted in a leading-order
coupling framework, exploring a wide range of benchmark coupling models both
with and without assumptions on the Higgs boson width and on the Standard Model
particle content in loop processes. The data are found to be compatible with
the Standard Model expectations for a Higgs boson at a mass of 125.36 GeV for
all models considered.
