The Distribution and Calculation of the Sample Generalized Variance Li Yuebo(Lect., Dept. of Mathematics &. Physis,WUT, Wuhan 430070,China.)The paper is based on the Fourier series and use the Chebyshev polynomials wonderfully,gives successfully the distribution and calculation of the sample generalized variance.:sample generalized variance;Chebyshev polynomials;Euler constant