Answer
(a) $∑X=0$
(b) $∑X^2=50$
(c) $∑(X+3)=15$
Work Step by Step
(a) $∑X=6+(-2)+0+(-3)+(-1)=0$
(b) $∑X^2=6^2+(-2)^2+0^2+(-3)^2+(-1)^2=36+4+0+9+1=50$
(c) $∑(X+3)=(6+3)+(-2+3)+(0+3)+(-3+3)+(-1+3)=9+1+3+0+2=15$
Essentials of Statistics for the Behavioral Sciences 8th Edition
by Gravetter, Frederick J.; Wallnau, Larry B.
Published by
Cengage Learning
ISBN 10:
1133956572
ISBN 13:
978-1-13395-657-0
Chapter 1 - Introduction to Statistics - Problems - Page 34: 20
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