Question - 11 : -
What kinds 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

Answer - 11 : -

(i) The monthly rainfall in a year can be best represented by a bar diagram as only one variable i.e. monthly rainfall is to be compared visually. The highest bar diagram indicates the highest rainfall in the corresponding month that is plotted on the x-axis.

(ii) Composition of the population of Delhi by religion can be represented by a simple bar diagram. Plotting different religion on the x-axis and the number of people on the y-axis, one can easily compare the number of the population religion-wise..

(iii) In order to represent different components of cost in a factory, a pie chart is more effective. The entire circle represents the total cost and various components of costsare shown by different portions of the circle.

Question - 12 : -
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?

Answer - 12 : -

Share of Rural and Urban Non-workers in India
Non-workers in Urban	Non-workers in Rural	Total Non-workers Population
(1)	(2)	(3) = (1) + (2)
19,31,38,837	42,96,00,032	62,27,38,869

Source:Census of India, 2001

Wecan infer from the above table that the absolute number of the ruralnon-workers is greater than the absolute number of the urban non-workers. Thehigher ( lower) share of the rural non-workers (urban non-workers) revealslower degree of urbanisation in India.

Question - 13 : -
How does the procedure of drawing a histogram differ when class intervals are unequal in comparison to equal class intervals in a frequency table?

Answer - 13 : -

A Histogram of equal class intervals has equal width of all rectangles indicating the same class intervals. In contrast, a Histogram of unequal class intervals has rectangles of varying width as per their corresponding class intervals. Before constructing a Histogram, frequencies of unequal class intervals are to be adjusted. The adjustment factor of each class is calculated with the following formula.

And the adjusted frequency will be calculated by dividing the original frequency by adjustment factor.

Question - 14 : -
The Indian Sugar Mills Association reported that, â€˜Sugar production during the first fortnight of December 2001 was about 3,87,000 tonnes, as against 3,78,000 tonnes during the same fortnight last year (2000). The off-take of sugar from factories during the first fortnight of December 2001 was 2,83,000 tonnes for internal consumption and 41,000 tonnes for exports as against 1,54,000 tonnes for internal consumption and nil for exports during the same fortnight last season.â€™

(i) Present the data in tabular form.

(ii) Suppose you were to present these data in diagrammatic form which

of the diagrams would you use and why?

(iii) Present these data diagrammatically.

Answer - 14 : -

(i) Sugar Production in India
Month, Year	Total Production	Internal Consumption	Export of Sugar
Month, Year	(tonnes)	(tonnes)	(tonnes)
Dec, 2000	3,78,000	1,54,000	â€“

Dec, 2001	3,87,000	2,83,000	41,000

(ii) With a view to present the data diagrammatically the multiple bar diagram can be effectively used.

(iii)

Free - Previous Years Question Papers

Chapter 4 Presentation of Data Solutions

Subscribe Now!