Enter a two-dimensional array of n row 2 column, the column 1 as abscissa x, the second column as the ordinate y,
1, calculate each point and origin of coordinates form a line segment length,
2, the maximum and minimum length,
According to the interval of 1, 3, the length from the smallest to the largest length length frequency statistics,
4, the output frequency, the statistic calculation under the form of mean and standard deviation of an array of frequency,