For details of the calculations, see calculation of work. Calculator is expanded to include scientific calculations. See Arbitrary-precision arithmetic for exact calculations. But Keplerian approximation is the basis for perturbation calculations. The description is used for frequencies, averages and other statistical calculations. Life tables provide the probabilities of survival necessary for such calculations. As with most engineering calculations, simplifying assumptions were made. In logistic regression analysis, deviance is used in lieu of a sum of squares calculations. Manometric measurement is the subject of pressure head calculations. Only Java has a data type for arbitrary precision decimal point calculations. The experiments agreed with corresponding density functional calculations. Psychologists have discovered systematic violations of probability calculations and behavior by humans. This value is finite in many practical calculations. This formula finds application in simplifying vector calculations in physics. There are also differences in the accuracy of calculations.