How can you tell if a set of bivariate data shows a linear relationship?

Make a scatterplot of the data. Once finished, look at the scatterplot to determine if the data taken holistically appears to be a close to the shape of a line.

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for