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Presentation of Data
Differentiate between ‘less than’ and ‘more than’ ogives.
Difference between ‘less than’ and ‘more than’ ogives:
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Less than Ogive |
More than Ogive |
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1. In this ogive, frequencies are added starting from the upper limit of the 1st class interval of the frequency distribution. 2. In this ogive, the cumulative total tends to increase. |
1. In this ogive frequencies are added starting from the lower limit of the 1st class interval of the frequency distribution. 2. In this ogive, the cumulative total tends to decrease. |
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Ogives can be helpful in locating graphically the:
Data represented through arithmetic line graph help in understanding:
Width of bars in a bar diagram need not be equal.
Width of rectangles in a histogram should essentially be equal.
Histogram can only be formed with continuous classification of data.
Histogram and column diagram are the same method of presentaton of data.
Mode of a frequency distribution can be known graphically with the help of histogram.
Median of a frequency distribution cannot be known from the ogives.
What kind of diagrams are more effective in representing the following:
(i) Monthly rainfall in a year.
(ii) Composition of the population of Delhi by religion.
(iii) Components of cost in a factory.
Suppose you want to emphasise the increase in the share of urban non-workers and lower level of urbanisation in India as shown in Example 4.2. How would you do it in the tabular form?
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