Site pages

Current course

Participants

General

Topic 1

Topic 2

Topic 3

Topic 4

Topic 5

Topic 6

Topic 7

Topic 8

Topic 9

Topic 10

Topic 11

Topic 12

Topic 13

Topic 14

Topic 15

Topic 16

Topic 17

Topic 18

Topic 19

## 4.2.2.5 ‘Inclusive’ Method

Under the ‘inclusive’ method of classification, the upper limit of one class is included in that class itself. The following example, illustrates the method :
In the class 1000-1099 we include persons whose income is between Rs.1000 and Rs.1099. If the income of a person is exactly Rs.1100 he is included in the next class. The above example makes it clear that there is no confusion here of the type we find under the ‘exclusive’ method. We may have classes like 1000-1099.5 or 1000-1099.99, and so on. To decide whether to use the inclusive or the exclusive method it is important to determine whether the variable under observation is a continuous or discrete one. In case of continuous variables the upper limit exclusive method must be used. For example, the variable height being inherently a continuous one should be stated as 60” and under 62”,62" and under 64”, and so on. The inclusive method should, in general, be used in case of discrete variables. Thus, in classifying factories according to number of workers, the limits should be stated as, for example, 100-199 employees, 200-299 employees and not 100-200, 200-300, etc. |