GRAPHS

diagrams, generally drawn for convenience on squared paper, which are intended to illustrate or prove a calculation or an array of facts. For ‘Instance, if a table showing the average height of a number of men was required, the simplest form would be a g. with the _ number of men of similar height arranged in ascending order on the side line with a scale in inches marked along the base. _ G’s of this kind take the form of a tall curve narrowing as it ascends and generally symmetrical; the normal variability curve is of this type. G’s are also employed in marking contour lines, barometric conditions, and for temperature charts, while their service is ay employed in math’s, especially Algebra.