Simple Line Graphs
a.Simple Histogram A simple histogram is a techniques used plotting a time series on the graph paper. The data are arranged according to the time of occurrence. Time is taken at the horizontal scale. I e the X axis an data and data are plotted at the vertical scale, i ,e, the Y axis. A simple line known as a histogram is plotted on the graph. First points are made according to time and related data. Secondary the points are chronologically joined to form a straight line which indicate the movements of data according to time.
b.Range Graph A range depicts data of two magnitudes according to the period of time. The difference between imports and exports can be known by the range graph according to the depiction of import and export figures. The gap may be shaded to emphasize the range. Similarly there may be two other related magnitudes to demonstrate the range graph e g revenue and there cost to demonstrate profit minimum and maximum temperature to show the climate and so on.
c.Band Graphs The band graph is used to depict more than two magnitudes are measured along the Y axis. Progressive totals of the components are measured for depicting certain purposed. For example the cost of production can be broken up to show the cost of raw materials cost of labor cost of fuel and the cost of machine contribution. They may be progressively aggregated to demonstrate their effectiveness. The differences are shaded differently to demonstrate their magnitude. Starting from the lower level to the higher level of each magnitude collectively will show the band graph.