First step in reading a bar graph is to know what it represents or what is the information given by it, for this we read the captions. Which are generally written just below the horizontal line (x axis) and adjacent to vertical line (y axis)
After knowing that what a bar graph represents, we read the scale so that we can know the precise value in the given data.
After reading a bar graph one must be able to draw certain conditions from it. Drawing some conditions from a given bar graph means interpretation of the bar graph.
