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.