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his book presents basic statistical techniques useful to the students of transportation engineering at both under graduate and post graduate level. It is intended for systematic reading. The fundamental concepts of measures of central tendency, measures of dispersion, Random variable, discrete and continuous distributions, Binomial distribution, Poisson distribution, Normal distribution, Mathematical expectation, Moments, Skewness, kurtosis, Curve fitting, Correlation, Partial correlation, Multiple correlation, Regression, hypothesis testing, time series and index numbers are discussed.