MIDTERM REVIEW October 7 th 2009 20 multiple choice questions (Scantron) Make sure you bring a #2 Pencil And your OWN GRAPHING CALCULATOR!

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Presentation transcript:

MIDTERM REVIEW October 7 th multiple choice questions (Scantron) ** Make sure you bring a #2 Pencil ** And your OWN GRAPHING CALCULATOR!

Important Topics  FINDING MEAN  FINDING STANDARD DEVIATION

Important Topics  Standard Deviation on the Calc STAT > Edit > Put in info in L 1 STAT > Calc > 1-Var Stats > Ent > Ent

Important Topics  Normal Distribution Bell-Shaped Curve MUST Know your %’s Remember 2.35% and 0.15%

Important Topics  Correlation vs Causation Just because 2 things have a strong correlation doesn’t always mean that 1 causes another Ex: Watching TV vs Grade in Class

Important Topics  Median-Median Line Steps 1) In order…Median of (x, y) in all 3 groups 2) Slope of 1 st and 3 rd groups…make equation 3) Use middle pt to find expected y 4) 1/3 (actual y – expected y) 5) Take answer from #4 and add to y-intercept

Important Topics  Graphing w/ calculator Use STAT Button List 1 = x…List 2 = y ZOOM Stat (9) Use Linear / Quadratic Regression Button  Which model is it? LinearCubic QuadraticExponential

Important Topics  Vertex Form  Intercept Form