$211.2 , 14.5$
Work Step by Step
Find midpoints for each class limits, use formula for the group data calculations. variance 211.2 (use formula) standard deviation 14.5 (take square root of variance)
You can help us out by revising, improving and updating this answer.Update this answer
After 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.