   Chapter 1, Problem 18P Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
ISBN: 9781305504912

Solutions

Chapter
Section Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
ISBN: 9781305504912
Textbook Problem

18 . 18. For the following scores, find the value of each expression: X 3 5 0 2    ∑ X    ∑ X 2    ∑ X   +   1    ∑ ( X + 1 )

To determine
1. To find X , add all X values.

• X =3+5+0+2 =10

2. To find X 2 , add all X 2 values.

• X 2 = 3 2 + 5 2 + 0 2 + 2 2 =9+25+0+4 =38
3. To find X +1 , add 1 to X value.

• X +1=( 3+5+0+2 )+1 =10+1 =11
4. To find ( X+1 ) , first add 1 to all X values and then add them.

• ( X+1 ) =[ ( 3+1 )+( 5+1 )+( 0+1 )+( 2+1 ) ] =[ 4+6+1+3 ] =14
Explanation

Conclusion:

X =10 X 2 =38

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