We present an analysis of the properties of the 6.7 GHz methanol maser sample detected in the Arecibo Methanol Maser Galactic Plane Survey . The distribution of the masers in the Galaxy , and statistics of their multi-wavelength counterparts is consistent with the hypothesis of 6.7 GHz maser emission being associated with massive young stellar objects . Using the detection statistics of our survey , we estimate the minimum number of methanol masers in the Galaxy to be 1275 . The l - v diagram of the sample shows the tangent point of the Carina–Sagittarius spiral arm to be around 49.6° , and suggests occurrence of massive star formation along the extension of the Crux–Scutum arm . A Gaussian component analysis of the maser spectra shows the mean line-width to be 0.38 km s ^ { -1 } which is more than a factor of two larger than what has been reported in the literature . We also find no evidence that faint methanol masers have different properties than those of their bright counterparts .