Question

# In Krishna’s family there are 4 members. The daily rice consumption of the 4 family members are - 0.5 kg, 0.4 kg, 0.3 kg and 0.6 kg. Krishna wants to find the rice consumption per family member. What is the quantity that will come into use now?

A

Median

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B

Mean

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C

Mode

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D

Median or Mode

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Solution

## The correct option is B Mean The mean of 4 numbers is nothing but their average. Let the 4 numbers be x1,x2,x3,x4. Their mean is x1+x2+x3+x44. What is the meaning of mean of the 4 numbers? If I want to replace the 4 numbers by a single number which when added 4 times gives the same total as the 4 numbers, this single number is the ‘mean’. Inthe case of Krishna’s family, if the rice consumption of each family member is replaced by the same number (mean) it would tell Krishna what is the rice consumption per member if all family members consumed same amount. This ‘mean’ is nothing but rice consumption per head.

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