Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 1 - Section 1.7 - Summation Notation - Exercises - Page 24: 1.38

Answer

Σy = $914$ $(Σy)^{2} = 835396$ $Σy^{2} = 144932$

Work Step by Step

Σy = $(216+184+35+92+144+175+11+57) = $914 $(Σy)^{2} = 914\times914 = 835396$ $Σy^{2} = (216\times216)+(184\times184)+(35\times35)+(92\times92)+(144\times144)+(175\times175)+(11\times11)+(57\times57) = 46656+33856+1225+8464+20736+30625+121+3249 = 144,932$
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