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Introduction to Data Interpretation

Direction: The bar graph shows the number of males and females (in crores) in India during 1951–1991. Read the graph and answer the following questions

  1. Assuming that the rate of increase in the total population in India during 1991-2001 remains the same as that was during the period 1981-1991, estimate the total population in India in 2001.
    1. 105.62 crores
    2. 106.25 crores
    3. 106.52 crores
    4. 105.26 crores
Correct Option: B

From the given bar diagram , we see
Total population in 1981 = 35 + 33 = 68 crores
Total population in 1991 = 44 + 41 = 85 crores
Total increase = 85 - 68 = 17 crores

Percentage increase =
Total increase
× 100
Total population in 1981

Percentage increase
=
1700
= 25%
68

Total population in 2001 = 125% of 85 crores
Total population in 2001 = 85 × 125crores
100

Total population in 2001 = 106.25 crores



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