Question

the average height of 10 students in a class was calculated as 166cm on verification it was found that one reading was recorded as 160cm instead of 150cm.Find the correct mean height.​

Answer 1

Answer:

$corrected \: mean \\ = \frac{166 \times 10 + 150 - 160}{10} \\ = \frac{1660 - 10}{10} \\ = \frac{1650}{10} \\ = 165 \: cm\\ thus \: the \: corrected \: mean \: is \: 165 \: cm.$

Answer 2

Answer:

total hight of 10 student=166*10=1660

difference=160-150=10

total hight of 10 student=1660-10=1650

mean=1650/10=165

answer=195