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M119L06-page2 - PART B NOTATION We typically use Greek...

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(Lesson 6: Measures of Spread or Variation; 3-3) 3.16 We will focus on the following, which use all of the data values and are used in many formulas. They are much harder to compute manually, though: 2) Variance (VAR) 3) Standard Deviation (SD) SD = VAR . This is the most commonly used measure of spread.
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Unformatted text preview: PART B: NOTATION We typically use Greek letters to denote population parameters. σ is lowercase sigma; remember that the summation operator ∑ is uppercase sigma. Mean SD VAR Population (Size N ) μ 2 ↓ Sample (Size n ) x s s 2...
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