Question

6. Gravetter/Wallnau/Forzano, Essentials - Chapter 1- End-of-chapter question 22 Use summation notation to express each of the following calculations Add the scores and square the sum O 2(SX) Square each score and then add the squared values Ο Σ(2x + 1) Subtract 2 points from each score and then add the resulting values. Σ(X-29 O (2x)2-2 Ο Σ(x-2) Subtract 1 point from each score and square the resulting values. Then add the squared values. O (2x)2-1 Ο Σ(X2-1)

Answer 1

Answer1 : Option C is correct. Add the score and square the sum is$(\sum X)^{^{2}}$

Answer 2 : Option D is correct.Squared each score and than add the squared value is $\sum X^{^{2}}$

Answer3 : Option D is correct. Subtract 2 point from each score and than add the resulting value is $\sum (X-2)$

Answer 4 : Option D is correct. Subtract 1 point from each score and square the resulting value and than add the squared value is $\sum (X-1)^{^{2}}$