Question

Find the sample standard deviation for the following data points.40 50 55 57 57 57 60What is x bar:__What is the sum of the square deviations:__What is the sample standard deviation:__Round all to the nearest tenth.

Answer 1

The table containing the given data is shown below.

The equation for standadrd deviation is,

$S\mathrm{}D=\frac{(x-\bar{x})^2}{n-1}$

Put the values implies,

$\begin{gathered} S.D=\frac{275.5}{7-1} \\ S.D=46 \end{gathered}$

Therefore, the answer is 46.