Question

If Professor Wilson found that the test scores of his students had a variance of 4.4, what is the standard deviation? Type a numerical answer in the space provided. Round your answer to the nearest tenth.

Answer 1

Answer:

The standard deviation will be: 2.1        

Step-by-step explanation:

We know that standard deviation is basically the square root of variance.

Using the formula to calculate the standard deviation

$s=\sqrt{s^2}$

As

• The variance =  s² = 4.4

so the standard deviation can be calculated as:

standard deviation $=\sqrt{s^2}$

                                 $=\sqrt{\left(4.4\right)^}$

                                  $=2.1$

Therefore, the standard deviation will be: 2.1