  Differential rotation can be detected in single line profiles of stars
rotating more rapidly than about $v \sin{i} = 10$ km s$^{-1}$ with the Fourier
transform technique. This allows to search for differential rotation in large
samples to look for correlations between differential rotation and other
stellar parameters. I analyze the fraction of differentially rotating stars as
a function of color, rotation, and activity in a large sample of F-type stars.
Color and rotation exhibit a correlation with differential rotation in the
sense that more stars are rotating differentially in the cooler, less rapidly
rotating stars. Effects of rotation and color, however, cannot be disentangled
in the underlying sample. No trend with activity is found.
