Abstract <p>The approximate method, which was previously used to correct the results of detecting exoplanets with the radial velocity technique for observational selection effects, yielded a significant error in a range of low masses. In the present paper we have significantly refined and improved this method. With the Lomb–Scargle periodograms and with accounting for a different number of measurements of the radial velocities of host stars, we showed that, in a range of 2–14 Earth masses, the distribution of planets detected with the radial velocity technique follows a power law with an exponent of   –1: d<i>N</i>/d<i>m</i> ~ <i>m</i>^–1.</p>