Statistics 2.0 / 5 based on 1 rating ? MathematicsStatistics, averages and distributionsA2/A-levelOCR Created by: Ruth NyeCreated on: 08-03-13 11:06 Sxx for Raw Data ∑(x-¬M)2 = ∑x2-nM2 1 of 8 Sxx for frequency distribution. ∑(x-¬M)2 f = ∑x2 f -nM2 2 of 8 Mean square deviation and RMSD ( Sxx/n) and √(Sxx/n) 3 of 8 Variance and Standard Deviation ( Sxx/n-1) and √(Sxx/n-1) 4 of 8 Outliers Mean± 2.S.D. OR UQ or LQ±1.5xIQR 5 of 8 Extreme Outliers Mean±3.S.D. OR UQ or LQ±3xIQR 6 of 8 Quartiles IQ: UP-LQ, LQ: n/4, UQ: 3(n/4) 7 of 8 Mean, Median, Mid-range, Range Mid-range: (Lowest +Highest)/2 8 of 8
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