Presentation of Data Test - 3

For calculating volume,  height, length and breadth is required 

Pie diagrams can be prepared by converting frequencies into angles in such a way that total of all angles should come equal to 360

Data in the form of grouped frequency distributions are generally represented by frequency diagrams like histogram, frequency polygon, frequency curve and ogive.

Frequently distribution can be framed from histogram. Frequently polygon and frequency curve can be prepared by converting the mid points of histogram. 

Bar diagrams are very simple to understand and most suitable for presenting year wise data of sales, profits, etc of the business. 

Normal base line starts with zero,  if the data is far away from zero, it becomes very difficult to present the data in a graph which is far away from the point of origin,  therefore, a false base line is prepared. 

A shape with only two dimensions (such as width and height) and no thickness are called two dimensional diagrams. 

Squares, Circles, Triangles, etc are two dimensional objects.

Component bar diagrams or charts , also called sub­diagrams, are very useful in comparing the sizes of different component parts (the elements or parts which a thing is made up of) and also for throwing light on the relationship among these integral parts. For example, sales proceeds from different products, expenditure pattern in a typical Indian family (components being food, rent, medicine, education, power, etc.), budget outlay for receipts and expenditures, components of labour force, population etc. Component bar diagrams are usually shaded or coloured suitably.

In line diagrams,  only one line passes through a vertex therefore it is a one dimensional diagram. 

A shape with only two dimensions (such as width and height) and no thickness.

Squares, Circles, Triangles, etc are two dimensional objects.