Question
Draw the ‘less-than’ and ‘more-than’ ogive from the data given below
| Weekly Wages (in Rs.) | Number of Workers |
| 0-20 | 10 |
| 20-40 | 20 |
| 40-60 | 40 |
| 60-80 | 20 |
| 80-100 | 10 |
✓
Answer
For less-than and more-than ogives, we will have to prepare less-than and more-than frequency distributions.
In less than method, the frequencies of all the preceding class intervals are added to the frequency of a class.
In more than method, the frequencies of all the succeeding class intervals are added to the frequency of a class.
The computation for both less than and more than ogive is given in the following table.
The less-than’ and ‘more-than ogives of the given data are shown below
In less than method, the frequencies of all the preceding class intervals are added to the frequency of a class.
In more than method, the frequencies of all the succeeding class intervals are added to the frequency of a class.
The computation for both less than and more than ogive is given in the following table.
| Less-than Distribution | More-than Distribution | ||
| Weekly Wages (in Rs.) | Number of Workers | Weekly Wages (in Rs.) | Number of Workers |
| Less than 20 | 10 | More than 0 | 100 |
| Less than 40 | 30 | More than 20 | 90 |
| Less than 60 | 70 | More than 40 | 70 |
| Less than 80 | 90 | More than 60 | 30 |
| Less than 100 | 100 | More than 80 | 10 |
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