Question

bryant collects a set of 20 values that represent the lengths of worms he found in the garden. the variance of the set of values $sigma^{2}$ is 36. what is the standard deviation from the mean? round the answer to the nearest tenth if necessary. o 4.5 o 6 o 14 o 15.5

Explanation:

Step1: Recall the relationship

The standard - deviation $\sigma$ and variance $\sigma^{2}$ are related by the formula $\sigma=\sqrt{\sigma^{2}}$.

Step2: Substitute the given variance

Given $\sigma^{2} = 36$, then $\sigma=\sqrt{36}$.

Step3: Calculate the value

$\sqrt{36}=6$.

Answer:

B. 6