Question

the average height of 10 students in a class was calculated as 166 cm . on verification 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:

No of occurences = 10

Wrong mean = 166

Sum of all occurences = 166 \times× 10 = 1660

Difference in data = 160 – 150 = 10

Sum of heights – 10 = 1660 – 10 = 1650

Mean = \frac{1650}{10}

10

1650

= 165 cm.

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