  The Fisher matrix (FM) has been generally used to predict the accuracy of the
gravitational wave parameter estimation. Although a limitation of the FM has
been well known, it is still mainly used due to its very low computational cost
compared to the Monte Carlo simulations. Recently, Rodriguez et al. [Phys. Rev.
D 88, 084013 (2013)] performed Markov chain Monte Carlo (MCMC) simulations for
nonspinning binary systems with total masses $M \leq 20 M_{\odot}$, they found
systematic differences between the predictions from FM and MCMC for $M>10
M_{\odot}$. On the other hand, an effective Fisher matrix (eFM) was recently
introduced by Cho et al. [Phys. Rev. D 87, 24004 (2013)]. The eFM is a
semi-analytic approach to the standard FM, in which the partial derivative is
taken by a quadratic fitting function to the local overlap surface. In this
work, we apply the eFM method to several nonspinning binary systems and find
that the error bounds in eFM are qualitatively in good agreement with the MCMC
results of Rodriguez et al. in all mass regions. In particular, we provide
concrete examples showing an importance of taking into account the
template-dependent frequency cutoff of the inspiral waveforms.
