Question

The average height of 10 stuents in a class as 166cm . On verfication it was found that one reading was wrongly recorded as 160cm,instead of 150cm . Find the correct mean height

Answer 1

Step-by-step explanation:

Average height of 10 stuents = 166 cm

Therefore,

Total height of 10 stuents = 166 x 10 = 1660 cm

Wrong reading = 160

Correct reading = 150

Differece = 150 - 160 = - 10

Therefore,

$Corrected \: mean \: height = \\ \frac{1660}{10} - 10 = 166 - 10 \\ = 156 \: cm.$