1b_Sigma_Outline

# 1b_Sigma_Outline - Example(Ch.1 Problem 19 X Find 4 a ∑ X...

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Note on Statistical Notation summation sign ( “sigma”) Summation Sign ( “sigma”) read as “the sum of” X means to add all the scores for variable X Summation Sign ( “sigma”) X 2 means first square each value of X, then add all of those squared values (X+1) means first add 1 to each value of X, then add all of those new values Summation Sign ( “sigma”) (X+1) 2 means (1) add 1 to each value of X, (2) square each of those new values, (3) add all of those squared values See Section 1.5 (p. 25) in the text for more on statistical notation and order of operations. Example (Ch.1, Problem 19) X Find. .. 4 a. X 6 0 3 2 Example (Ch.1, Problem 19) 1 2 3 4 5 6

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X Find. .. 4 a. X = 15 6 0 3 2 Example (Ch.1, Problem 19) X Find. .. 4 a. X = 15 6 0 b. X 2 3 2 Example (Ch.1, Problem 19) X Find. .. 4 => 16 a. X = 15 6 => 36 0 => 0 b. X 2 3 => 9 2 => 4 Example (Ch.1, Problem 19) X Find. .. 4 => 16 a. X = 15 6 => 36 0 => 0 b. X 2 = 65 3 => 9 2 => 4

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Unformatted text preview: Example (Ch.1, Problem 19) X Find. .. 4 a. ∑ X = 15 6 0 b. ∑ X 2 = 65 7 8 9 10 3 2 c. ∑ (X+1) Example (Ch.1, Problem 19) X Find. .. 4 => 5 a. ∑ X = 15 6 => 7 0 => 1 b. ∑ X 2 = 65 3 => 4 2 => 3 c. ∑ (X+1) Example (Ch.1, Problem 19) X Find. .. 4 => 5 a. ∑ X = 15 6 => 7 0 => 1 b. ∑ X 2 = 65 3 => 4 2 => 3 c. ∑ (X+1) = 20 Example (Ch.1, Problem 19) X Find. .. 4 a. ∑ X = 15 6 0 b. ∑ X 2 = 65 3 2 c. ∑ (X+1) = 20 d. ∑ (X+1) 2 Example (Ch.1, Problem 19) X Find. .. 4 => 5 a. ∑ X = 15 6 => 7 0 => 1 b. ∑ X 2 = 65 3 => 4 2 => 3 c. ∑ (X+1) = 20 11 12 13 14 d. ∑ (X+1) 2 Example (Ch.1, Problem 19) X Find. .. 4 => 5 => 25 a. ∑ X = 15 6 => 7 => 49 0 => 1 => 1 b. ∑ X 2 = 65 3 => 4 => 16 2 => 3 => 9 c. ∑ (X+1) = 20 d. ∑ (X+1) 2 Example (Ch.1, Problem 19) X Find. .. 4 => 5 => 25 a. ∑ X = 15 6 => 7 => 49 0 => 1 => 1 b. ∑ X 2 = 65 3 => 4 => 16 2 => 3 => 9 c. ∑ (X+1) = 20 d. ∑ (X+1) 2 = 100 15 16 17...
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1b_Sigma_Outline - Example(Ch.1 Problem 19 X Find 4 a ∑ X...

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