118. The average height of 12 students in a class was calculated as 152 cm. On
verification it was found that one reading was wrongly recorded as 118 cm instead of
172 cm. Find the correct mean height
(A)
- (B)
(C)
150 cm
156 cm
158 cm
154 cm
Answers
Answered by
5
Answer:
156
Step-by-step explanation:
152 ×12 =1824.
172 - 118 =54.
1824 + 54 = 1878.
1878/12 = 156.5
Answered by
2
Answer:
The correct answer is 156
Step-by-step explanation:
Total height of 12 students in a class is ( 152 × 12 ) = 1824 cm
For the one wrong record, total height was reduced ( 172 - 118 ) = 54 cm
Now the total height is ( 1824 + 54 ) = 1878. cm
So, the correct mean height is ( 1878/12 ) = 156.5 cm
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