need help in calculating the average time squared. Trial 1 = 1.20 s Trial 2 = 1.22 s Trial 3 = 1.32 s  all for distance 0.3 m I have the average time for that (1.20 + 1.22 + 1.32)/3 I would like to understand how to calculate the square of the average time so I can continue

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter1: Getting Started
Section: Chapter Questions
Problem 18PQ: Acceleration a has the dimensions of length per time squared, speed v has the dimensions of length...
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I need help in calculating the average time squared.

Trial 1 = 1.20 s Trial 2 = 1.22 s Trial 3 = 1.32 s  all for distance 0.3 m

I have the average time for that (1.20 + 1.22 + 1.32)/3

I would like to understand how to calculate the square of the average time so I can continue with the other distances that I have. 

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