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bryant collects a set of 20 values that represent the lengths of worms …

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. 4.5 6 14 15.5

Explanation:

Step1: Record la fórmula de desviación estándar

La desviación estándar $\sigma$ es la raíz cuadrada de la varianza $\sigma^{2}$. Entonces $\sigma=\sqrt{\sigma^{2}}$.

Step2: Sustituir el valor de la varianza

Dado que $\sigma^{2} = 36$, entonces $\sigma=\sqrt{36}=6$.

Answer:

B. 6