Presentation of Data — Economics STD 11 Commerce — Question

Simple and complex tables: The distinction between simple and complex table is based on the number of characteristics studied.
In a simple table only one character is shown. Hence this type of table is also known as one-way table. On the other hand in a complex table two or more characteristics are shown. When two characteristics are shown such a table is known as two-way table or double tabulation.
Example of one way table: Number of employees in state bank according to age group.

Age (in years)	No. of employees
Below 25	3
25-35	2
35-45	2
Above 45	3

Example of two-way table: Number of employees of state bank in different age groups according to sex.

Age (in years)	Employees		Total
	Males	Females
Below 25	3	2	5
25-35	4	5	9
35-45	5	6	11
Above 45	2	3	5
Total	14	16	30

When three or more characteristics are represented in the same table is called three-way tabulation. As the number of characteristics increases, the tabulation becomes so complicated and confusing.