Normalized distribution of 294 giant extrasolar planets discovered by the radial velocity technique to date with a mass greater than 0.5 M_Jup (blue line). The normalized distribution of binaries within a 3000-day-period from Raghavan et al. (2010) is displayed with the red line. The expected FPP distribution for giant Kepler candidates is overplotted with the dashed black line. The hatched region represents planet orbital periods that we considered to be affected by observational bias. The FPP in this region is therefore expected to be overestimated.