The application is composed as calculator for the known statistical distributions:
Negative Binomial distribution,
Truncated normal distribution,
U-quadratic distribution, and
For each distribution in editing fields is entered data and only one, we want to calculate remains empty( some fields can not be calculated, such as the field degree of freedom). All integrals are calculated by Gauss quadrature formulas with seven knots. The application has location for English, Bulgarian, French and German, Help and About - information for application.
The application shows a hundred points graph and a table with individual distribution. Tables with specific distributions can be stored in a database of type SQLit. The distributions are recorded in the table each line contains the following fields: - key of distribution; - beginning of interva; - second field end of the interval; - third field the middle of intermodal; - the next field is the density at the midpoint of the interval and last field contains the cumulative probability. The database can be copied in Phonstorage and from there is sent for storage and printing of individual distribution. All integrals are calculated by Gauss quadrature formulas with seven knots.
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