Math, asked by awasthiadi2003, 11 months ago

Mean of twenty observation is 15 if two observation 3 and 14 are replaced by 8 and 9 respectively then the new mean will be

Answers

Answered by jgdevipriya200154

5

Answer:

no of observation = 20×15 =300 , 300 -3-14 = 283 + 8+9 =300 the new mean is 15

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