Examveda
Examveda

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

A. 12.6

B. 14

C. 15

D. 13.8

Answer: Option B

Solution(By Examveda Team)

According to the question,
Average of 25 observations = 13
Sum of 25 observations = 13 × 25 = 325
One observation entered wrongly 48 instead of 73.
∴ Difference = 73 - 48 = 25 (less)
∴ Actual sum of 25 observation = 325 + 25 = 350
Actual average = $$\frac{350}{25}$$ = 14

This Question Belongs to Arithmetic Ability >> Average

Join The Discussion

Related Questions on Average