DESCRIPTIVE STATISTICS: GROUPED DATA Confidence Level 95.000%
Hypertension Screening Program       Significance Level 5.0%   Grouped data for histogram from Bernard Rosner, Fundamentals of Biostatistics, 2nd edition (Boston, MA: PWS Publishers/Duxbury Press, 1986), pp. 352-355.
t(α/2,n-1) 1.960124938
Observations Group Limits
Number of Observations 14736 Minimum 40
Number of Groups 8 Maximum 120
Optimal Number of Groups [Sturges' Rule] 14.84705735 Range 80
Interval Midpoint Group Frequencies
Mean 81.01248643 Minimum 57
Median 80.57558645 Maximum 4604
Mode 80.07984032 Range 4547
Geometric Mean 80.10095262
Harmonic Mean 79.17666802
Population Sample
Population Standard Deviation 12.12519995 Sample Standard Deviation 12.12561139
Population Variance 147.0204738 Sample Variance 147.0304515
Coefficient of Variation 0.149670754 Coefficient of Variation 121.3960463
Standard Error of the Mean 0.099884731 Standard Error of the Mean 0.09988812
95% Confidence Interval for Population Mean 95% Confidence Interval for Sample Mean
Lower Limit L 80.81669988 Lower Limit L 80.81669323
Upper Limit U 81.20827298 Upper Limit U 81.20827962
Quartiles, Deciles, Percentiles 95% Confidence Interval for Population Mean Symmetry Quartiles, Deciles, Percentiles
Skewness 0.259660615 Lowest Q0 D0 P0 40
Standard Error of Skewness (SES) 0.020176304   P1 52.73818182
Skewness Test Statistic (Skewness/SES) 12.86958267   P5 61.64071295
Distribution's Deviation from Symmetry Extended to Right   D1 P10 65.09662289
Peakedness Q1   P25 72.54144852
Kurtosis 3.229019838 Median Q2 D5 P50 80.57558645
Standard Error of Kurtosis (SEK) 0.040349872 Q3   P75 88.57732407
Excess Kurtosis 0.229019838   D9 P90 97.34025484
Kurtosis Test Statistic (Excess Kurtosis/SEK) 5.67585048   P95 102.6282246
Shape of Distribution's Peak Leptokurtic   P99 114.1290837
Distribution's Degree of Peakedness Near Normal Highest Q4 D10 P100 120
Inter-Quartile Range Q3-Q1 16.03587555
Correlation
Correlation (Pearson) CORR(τ,O) 0.04631242
Population Moments
Bar Lengths as % of Maximum
m1 -3.2094E-15
m2 147.0204738 Confidence Inteval for Mean 100%
m3 462.8846817 Percentiles 15%
m4 69795.32751 Mode 100%
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