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    Stats ppt Stats ppt Presentation Transcript

    • “STANDARD DEVIATION”The “Standard Deviation” is a measure of how spread out numbers are.Its symbol is σ (the greek letter sigma)
    • 80 71.77060 55.8750 43.49 44.85 43.52 45.62 44.7240 37.81 32.7 28.7 29.91302010 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
    • 80 71.770 Mean60 55.8750 43.49 44.85 43.52 45.62 44.7240 37.81 32.7 28.7 29.91302010 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
    • 80 28.27060 12.37 Mean50 1.35 0.02 2.12 1.2240 -0.0130 -5.69 -10.8 -14.8 -13.5920100 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
    • 80 71.7 σ7060 55.87 M50 12 E 43.49 44.85 43.52 45.62 44.72 A40 12 37.81 N 32.7 28.7 29.913020 σ10 0 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011