Answer
Standard Deviation = 0.2
Work Step by Step
$s^{2} = \frac{SSE}{n-2}$
= 1.04/ (28-2)
= 0.04
$s = \sqrt s^{2} = \sqrt 0.04 = 0.2$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.