Question

A random sample of 10 subjects have weights with a standard deviation of 11.9407 kg. What is the variance of their​ weights? Be sure to include the appropriate units with the result. The variance of the sample data is nothing ▼ kg cubed . kg squared . kg. ​(Round to four decimal places as​ needed.)

Answer 1

Answer: $142.58\text{squared kg}[$

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given : A random sample of 10 subjects have weights with a standard deviation of 11.9407 kg

i.e. $\sigma = 11.9407$

Since we know that the value of variance is the square of standard deviation.

i.e. $\text{Variance}=\sigma^2$

Therefore, to find the value of variance, we need to find the square of the given standard deviation.

i.e. $\text{Variance}=(11.9407)^2=142.58031649\approx142.58\text{squared kg}$

Thus, the variance of their​ weights =$142.58\text{squared kg}[$