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normal distribution造句
91) Test scores and other educational variables often approximate a normal distribution. 92) The values monitored were of logarithmic normal distribution; unbiased estimations of mean and standard deviation of MLE were 34. 93) Mandelbrot makes a strong case that the normal distribution is a poor estimator for the distribution of price changes, and that a fractal distribution paints a more accurate picture. 94) OBJECTIVE: Study the fitting about S model dose - effect curve with the accumulation normal distribution function. 95) MethodsBased on the theory of normal distribution and central limit theorem of the statistics, the immune control chart is proposed, which combines the immune idea. 96) A histogram of melt blown fiber diameters is shown by the logarithmic normal distribution, its molecular orientation increases with the de- crease of fiber diameter. 97) The paper finds that the fatigue life of laser cladding submit the logarithmic normal distribution. 98) A new portfolio investment model with no normal distribution return rate was presented.