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.
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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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