The average and median of rolling bearing and the relationship between data discreteness

The average and median of rolling bearing and data discreteness of relationships: the distribution of data mean and median of fan ping and discreteness are three concepts in statistics. In general, the more widely, the characteristic of data, the worse: on the other hand, the better. For discrete function, using the standard deviation table didn't effect the discreteness of; For continuous function, using the discreteness of interval data. Statistical simulation is one of the important methods of modern analysis: one, the following use statistical simulation method to analyze the median, the relationship between average and data discreteness. The common normal distribution and Rayleigh distribution, triangular distribution, uniform distribution and weibull distribution number to analyze the median, the relationship between average and discreteness. Among them, for normal distribution and Rayleigh distribution, median, mean, standard deviation and mean with four parameters such as the absolute value of median difference; For triangular distribution and uniform distribution, the median, average median, range, and the average and the absolute value of difference and so on four parameters. For the convenience of data analysis, normal distribution and Rayleigh distribution of the initial value is set to 0. 1, the standard deviation is set to 0. 01, 0. 02, 0. 03. Triangular distribution, uniform distribution, weibull distribution of the initial value is set to 0. Set to 1, the interval [ 0. 1, 1] 、[ 0. 1, 2] 、 [ 0. 1, 3] 。 Normal distribution: set the initial value of 0. 1, standard deviation, respectively 0. 01, 0. 02 and 0. 03, 10 data using normal distribution simulation, in accordance with the order of the growing up of 10 data. Normal distribution simulation data mean and median increase with the increase of the poor D1 as the standard deviation of the absolute value of. Standard deviation according to the discreteness of data, with the increase of discrete data, normal distribution simulation data the increase of the absolute value of the mean and the median is poor. That is to say, the normal distribution simulation data the farther from the median, average data discreteness, the worse.