applied nonparametric statistics daniel free

Statistical significance testsZ - test Sample :Probability<19.6>19.6Sd16 %84 %-1σμStandard deviationZ score0-1

Statistical significance testsZ - test Sample :BMIMean ( ) = 26.20Standard deviation (s) = 6.57What is the probability that of a person having BMI 19.2 sdbelow the mean19.2 sd above the meanA person with a BMI of 19.2 has a z score of:So this person has a BMI 1.07 standard deviations below the mean Statistical significance testsZ - test Z-value :How many standard deviations away from mean?+ve z: values are above the mean, -ve z: values are below the meanPopulationSampleGroup compared to population1 point compared to population Statistical significance testsSignificance tests Z- test t- test F- test ANOVA

Measures of dispersionNormal DistributionLSLLSLUSLUSL Measures of dispersionNormal DistributionIQ ScoreCountScore<55115130145100857055145<

Measures of dispersionNormal DistributionExample: IQ Score Measures of dispersionCoefficient of VarianceCV = s/ *100% 4.57/44.5*100% = 10.28%Standard deviation is 10.28% of the mean Measures of dispersionVariance:Standard deviation:xSSSS/(n-1)MSsd√MSMost of the data lies between 44.5±4,57 = 39to 49 Applied StatisticsMeasures of central tendency (central position of data)µMeanPopulation :Sample:MedianModeMeasures of dispersion (spread of data)Varianceσ2s2Population :Sample:Standard deviationσsPopulation :Sample:Coefficient of variation

Applied nonparametric statistics daniel free