Question

The average of 25 observations is 13.It was later found that an observation 73 was wrongly entered as 48. Find the new average

Answer 1

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ANS :

........................14..........................

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GIVEN :

=> AVERAGE OF 25 IS 13

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TO FIND :

=> TOTAL OF 25 :

=> AVERAGE * NUMBER

=> 13 * 25

=> 325

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GIVEN :

=> 73 WAS WRONGLY ENTERED AS 48

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TO DO :

=> ADD THE CORRECT NUMBER :

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TO FIND THE NO. WHICH IS TO BE ADD IN TOTAL :

=> UNENTERED NO. - ENTERED NO.

=> 73 - 48

=> 25

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NEW TOTAL :

=> TOTAL + 25

=> 325 + 25

=> 350

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NEW AVERAGE :

=> NEW TOTAL / TOTAL OBSERVATIONS

=> 350 / 25

=> 14

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HOPE IT WILL HELP U

THANKS AGAIN

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