Question

the average weight of 5 people is 67 Kg. if one reading is wrongly noted at 35 instead of 55, find the new mean ​

Answer 1

Answer:

Hi there. here is your answer.

Step-by-step explanation:

The correct average weight is 89.85 Kg

Step-by-step explanation:

Given that the average weight of a group of 20 boys = 89.4 kg

Sum of a weight of 20 boys = 89.4 × 20

= 1788 kg

It was later discovered that one weight was misread as 78 kg instead of 87 kg

⇒ Difference between the misread weights = 87 - 78

= 9 kg

So, Actual sum of a weight of 20 boys = 1788 + 9 = 1797 kg

\implies \textbf{Actual Average = }\bf \frac{1797}{20}\approx 89.85\:\:Kg⟹Actual Average =

20

1797

≈89.85Kg

Therefore, The correct average weight is 89.85 Kg

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