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Question
In the 'less than' type of ogive the cumulative frequency is plotted against
Options
the lower limit of the concerned class interval
the upper limit of the concerned class interval
the mid-value of the concerned class interval
any value of the concerned class interval
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Solution
the upper limit of the concerned class interval
In the less than type of ogive the cumulative frequency is plotted against the upper limit of the concerned class interval.
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RELATED QUESTIONS
A survey conducted by an organisation for the cause of illness and death among the women between the ages 15 - 44 (in years) worldwide, found the following figures (in %):-
| S.No. | Causes | Female fatality rate (%) |
| 1. | Reproductive health conditions | 31.8 |
| 2. | Neuropsychiatric conditions | 25.4 |
| 3. | Injuries | 12.4 |
| 4. | Cardiovascular conditions | 4.3 |
| 5. | Respiratory conditions | 4.1 |
| 6. | Other causes | 22.0 |
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- Try to find out, with the help of your teacher, any two factors which play a major role in the cause in (ii) above being the major cause.
The following table gives the distribution of students of two sections according to the mark obtained by them:-
| Section A | Section B | ||
| Marks | Frequency | Marks | Frequency |
| 0 - 10 | 3 | 0 - 10 | 5 |
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| 20 - 30 | 17 | 20 - 30 | 15 |
| 30 - 40 | 12 | 30 - 40 | 10 |
| 40 - 50 | 9 | 40 - 50 | 1 |
Represent the marks of the students of both the sections on the same graph by two frequency polygons. From the two polygons compare the performance of the two sections.
Study the bar graph representing the number of persons in various age groups in a town shown in Fig. below. Observe the bar graph and answer the following questions:
(i) What is the percentage of the youngest age-group persons over those in the oldest age group?
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| Frequency | 3 | 5 | 6 | 4 | 2 |
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175 - 225 |
225 - 275 |
275 - 325 |
325 - 375 |
|
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4 |
20 |
22 |
10 |
6 |
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| 30 – 40 | 3 |
| 40 – 50 | 6 |
| 50 – 60 | 25 |
| 60 – 70 | 65 |
| 70 – 80 | 50 |
| 80 – 90 | 28 |
| 90 – 100 | 14 |
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