When constructing line charts, the vertical or quantity increments must be the same as the horizontal or time increments so that the line or lines drawn will have reasonable slopes.
a. True b. False
b. False
In line charts, the vertical (quantity) increments do not have to be the same as the horizontal (time) increments. The key is to accurately represent the data and maintain the correct relationships between the values. Different increments can be used as long as the scale is clear and the data is presented accurately.