Measured slope of the IMF as a function of the (logarithmic) stellar mass for a compilation of Milky Way measurements (filled squares) and for our measurements of NGC 3351 (colored circles). Red squares are measurements from Scalo (1998), purple ones are globular cluster measurements from Piotto & Zoccali (1999), and finally yellow symbols are IMF measurements of the Milky Way bulge presented in Holtzman et al. (1998) and Zoccali et al. (2000). Green dashed lines and shaded areas are the solar neighborhood standard measured by Kroupa (2002). Our IMF slope measurements, color-coded by the local surface stellar mass density, follow a behavior similar to the resolved IMF studies, although the scatter in our measurements is not purely stochastic and a systematic dependence on the stellar density is found.