RRB Junior Engineer Stage 1 Model Papers 10

Question : 26 of 98

Marks: +1, -0

The average of 100 observations was calculated as 35.It was found later, that one of the observation was misread as 83 instead of 53. The correct average is :

32.7
34.7
35.7
36.7

Validate

Solution:

Average of difference

={83-53}/100=30/100=0.3

Correct Average

= 35 – 0 3 = 34.7

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