47. You are instructed to subtract 4 points from each score, square the resulting value, and find the sum of the squared numbers. How would this set of instructions be expressed in summation 21. A doctor is measuring children's heights to the nearest 1/2 inch and obtains scores such as 40.0, 40.5, 41.0, and so on. What are the real limits for a score of X = 42? 41. What is the value of (EX) for the scores 1, 0, 2, 4? notation? a. 41 and 43 a. 14 a. EX - 42 b. 41.5 and 42.5 b. 21 b. (EX-4)2 c. 41.75 and 42.25 c. 28 d. 49 C. E( X -4)2 d. 41.25 and 42.75 ANSWER: d d. Ex2 - 4 ANSWER: C ANSWER: C 36. What is the value of (EX)2 for the scores 1, 5, 2? 42. What is the value of EX + 1 for the scores 1, 6, 3? a. 10 48. Which of the following is done last in the order of operations? a. 10 b. 11 a. Squaring b. 16 c. 13 b. Multiplication . 30 d. 16 d. 64 c. Addition ANSWER: b ANSWER: d d. Summation (X) 43. What is the value of E(X + 1) for the scores 2, 4, 7? ANSWER: nc 37. What is the value of EX for the scores 1, 0, 2, 4? a. 10 a. 14 b. 11 80. Calculate each value requested for the following set of scores. Scores: 2, 3, 0, 5 b. 21 c. 13 a. EX c. 2 d. 16 b. EX- 1. 49 ANSWER: d C. (EX)2 ANSWER: b 44. What is the value of E(X- 2) for the scores 2, 3, 5? ANSWER: a. 10 38. What is the value of EX + 1 for the scores 1, 0, 2, 4? b. 38 a. 4 c. (10) = 100 a. 8 b. 6 b. 10 C. 8 81. Calculate each value requested for the following set of scores. Scores: 3, 4, 2, 6 c. 11 d. 10 a. EX-2 1. 14 ANSWER: a b. E(X-2) ANSWER: a E(X-2)2 45. What is the value of E(X- 2)2 for the scores 2, 3, 5? 39. What is the value of E(X + 1) for the scores 1, 0, 1, 4? ANSWER: a. 13! a. 8 a. 4 b. 7 b. 10 c. 21 b. 6 c. 16 d. 36 1. 10 ANSWER: b 82. Calculate each value requested for the following set of scores. ANSWER: d a. EX XY b. EY 46. You are instructed to subtract 4 points from each score and find the sum of the resulting C. EXEY N-U 40. What is the value of E(X- 1)2 for the scores 1, 2, 1, 4? Now. values. How would this set of instructions be expressed in summation notation? d. EXY . 10 a. EX - 4 b. 16 b. E (X - 4) ANSWER: a. c. 36 c. 4 - EX d. 49 d. E(4- X) ANSWER: a ANSWER: b