With the help of the given statistical data, prepare a simple line graph and answer the following questions :Sex ratio of India (number of females per 1000 males)Census year1951196119711981199120012011Sex ratio946941930934927933943(1) In which census…

Answer: (1) 1991; (2) an increase of 10; (3) the sex ratio is improving after 1991.

Graph (simple line graph): Title: Sex ratio of India (1951–2011). X-axis: census years at equal intervals (1 cm for each census). Y-axis: sex ratio (females per 1000 males). Since all values lie between 920 and 950, start the Y-axis at 900 with a break mark (zig-zag) near the origin and take 1 cm = 5 females per 1000 males.

Plot the points, join them with a smooth line, and write the title, scale and labels of both axes on the graph.

(Note: a picture of the graph cannot be shown here; in the examination the graph must be drawn on graph paper as described above.)

Answers:

(1) The sex ratio was lowest in 1991 (927).

(2) It rose from 933 to 943, an increase of 943 − 933 = 10 females per 1000 males.

(3) After 1991 the line rises: the sex ratio has been improving steadily (927 → 933 → 943), though it is still below 1000, i.e. there are fewer females than males in India.