Work Step by Step
To find the average, sum the numbers then divide the sum by the count of the numbers. $[(-17)+(-26)+(-20)+(-13)]\div4=[-76]\div4=-19$
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.