To compare the rainfall data, India Meteorological Department (IMD) calculated the Long Period Average (LPA) of rainfall during period June-August for each of the 16 states. The figure given below shows the actual rainfall (measured in mm) during June-August, 2019 and the percentage deviations from LPA of respective states in 2018. Each state along with its actual rainfall is presented in the figure.
If a ‘Low Monsoon State’ is defined as a state with actual rainfall from June-August,2019 of 750 mm or less, then what is the median ‘deviation from LPA’ (as defined in the Y-axis of the figure) of ‘Low Monsoon States’?
Correct Answer :
-10%
Solution :
First, we identify all the states that meet the criteria of being a ‘Low Monsoon State’ (actual rainfall of 750 mm or less during June-August, 2019).
For each of these states, we list their corresponding values for ‘deviation from LPA’ from the Y-axis of the graph.
After listing these deviation values, we arrange them in ascending order and find the middle value (median) to arrive at the answer.
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