291Test1Formulas

# 291Test1Formulas - Q 1 –1.5*IQR limit 4 The right whisker...

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MGSC 291 Formulas for Test 1 Chapter 3

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Chapter 3 (continued) In Chebyshev’s Theorem and the Empirical Rule below, within z standard deviations of the mean is : Between (Mean – z *Stdev) and (Mean + z *Stdev) For a sample: Between ( z * s ) and ( + z * s ) For a population: Between ( μ z * σ ) and ( μ + z * σ ) BOX PLOT 1. The box extends from Q 1 to Q 3 . 2. There is a vertical line through the box at the median. 3. The left whisker extends from the end of the box to the smallest data value inside the

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Unformatted text preview: Q 1 –1.5*IQR limit. 4. The right whisker extends from the end of the box to the largest data value inside the Q 3 +1.5*IQR limit. 5. Any data values outside the whiskers are shown with the * symbol. OUTLIER DETECTION 1. For bell-shaped data- Data values with z-scores less than –3 or greater than +3 are potential outliers. 2. For skewed data- Data values represented as * on a box plot are potential outliers. Chapter 4 Chapter 5...
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## This note was uploaded on 09/28/2011 for the course MGSC 291 taught by Professor Rollins during the Spring '09 term at South Carolina.

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291Test1Formulas - Q 1 –1.5*IQR limit 4 The right whisker...

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