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A random sample of 10 subjects have weights with a standard deviation of 11.0482 kg. What is the variance of their​ weights? Be sure to include the appropriate units with the result.

User Steve E
by
7.6k points

1 Answer

1 vote

Answer:

122.0627kg

Explanation:

The standard deviation is the square root of the variance.

That means:


\sigma = √(variance)

From the question, the standard deviation of the weights of the 10 random subjects is 11.0482kg

We substitute to get:


11.0482 = √(variance)

We square both sides to get:


11.0482^(2) = variance


122.0627 = variance

Therefore the variance is 122.0627kg

User Daniel Kim
by
5.6k points
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