Net Diagrams

Net Diagram in interpretation

This type of graph indicates the variation of a quantity with respect to two parameters represented on x -axis and y -axis respectively. So the candidate must carefully observe the peaks and depths of the graph to interpret the data.

Example 1:

1. Which year of the following did California have the least number of cases?
A. 1960
B. 1975
C. 1970
D. 1980
E. 1990
Explanation : From the diagram its 1975

2. How many cases were registered in NY and CAL in 1950?
A. 275
B. 325
C. 320
D. 290
E. 150
Explanation : 150+125=275

Example 2:
Graph shows expenditure on arms by different countries (value in dollars ‘000 millions)

1. The amount spent by country C in 1983 is what percentage more than the amount spent by Countries A and B together in 1977? (Find approximately)
A. 50%
B. 179%
C. 75%
D. 13%
E. 70%
Explanation : The amount spent in 1977 by Countries A and B together =\$ (0.75+1.25) = \$2.0 million.
The amount spent by Country C in 1983 = \$3.5 million.
This is \$1.5mn more than (A + B). In percentage it is = (1.5/2.0) (100)=75%.

2. Which of the following statements must be true?
i) Country A spends minimum amount of its budget on arms.
ii) Throughout, Country C has spent the maximum amount on arms during the years shown.
iii) An examination of the information for the last 3 years reveals that generally all 3 countries are reducing their expenditure on arms.

A. i only.
B. i and ii only
C. i and iii only
D. ii and iii only
E. None of the statements above.