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Average means that the formula's are needed to be related rather than just sum of observations/no of observations.

Ex. Question: A person travel from A to B with speed of 10km/h and comes back B to A with the speed of 20km/h. Find the average speed of journey.

People would readily do sum of observation/no of observation

(20+10)/2=15km/h but this is not the answer.

the formula: Speed=Distance/time is need to be used and related for both conditions.

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11y ago

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