the median of an ungrouped data is 15 then observation is changed from 20 to 25.the median now is
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Step-by-step explanation:
median is known as middle value since middle value is 15 .
Initially one of the observation is 20 , 20 comes after 15 .
Even if one observation (20) is replaced by another observation (25), still median remains 15 only since both 20 and 25 comes after 15.
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