i 120 Co X 23. For each of the following set of scores find the value of each expression: (a)ΣΧ2 (b) (Σx) (c) Σ(X - 3) (d) Σ(x – 3)2 (a) Blank 1 (b) Blank 2 (c) Blank 3 (d) Blank 4 Blank 1 Blank 2 Blank 3 Blank 4 Add your answer Add your answer Add your answer Add your answer X 1 6 23 2 4 OF 4 QUESTIONS REMAINING 3 n E CO X 21. Two scores X and Y are recorded for each n=4 subjects. For these scores, find the value of each expression. (2) Σ x = Blank 1 X (b) Y = Blank 2 (c) ΣXY = Blank 3 Blank 1 Blank 2 Subject A B C D Blank 3 Add your answer Add your answer Add your answer X 3 0 4 OF 4 QUESTIONS REMAINING -1 2 Y 4 7 5 2

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