Algebra 2 Question of the Day

Test your knowledge with a hand-picked multiple-choice question.

The formula for standard deviation is the following:

$\sigma = $\sqrt{\frac{\sum (x - x_${avg}$)^2$}{n-1}}$ .

Where,

$\sigma = $\text{ standard deviation}$$ ,

$n=$\text{ number of data points}$$ .

Five students took a test and recieved the following grades: , , , , . What is the standard deviation of the test grades to the nearest decimal place?

Select an answer and click Check.

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