KaleidaGraph is a graphing and data analysis tool that provides powerful visual display. Its plot types include line, scatter, double-X, double-Y, double-XY, high-low, step, probability, X-Y probability, histogram, box, percentile, horizontal bar, stack bar, column, stack column, polar, pie, and function (enter a formula). You can export binned data to a step plot, spike plot, or histogram. KaleidaGraph features powerful curve fitting. Built-in fits include smooth, weighted, cubic spline, and interpolate curve fits, as well as least-squares regressions (linear, polynomial, exponential, logarithmic, and power). Included is a library of more than 100 industry-specific formulas you can customize. Utilize a predefined fit or enter your own equation (up to nine parameters), define up to 16 curve fits for simultaneous use on a single plot, extrapolate curve fits to axis limits, show fit equation, define parameters, and copy the values of the curve fit or the residuals into the data window for further analysis. Data manipulation and analysis choices include min, max, sum, points, mean, median, RMS, standard deviation, variance, standard error, skewness, kurtosis, and student t-test. Select from more than 100 menu items to create algebraic equations for data manipulations. Use scripts to automate the process of importing data, manipulating data, creating plots, and exporting or printing plots. The macrocalculator allows you to use conditional testing, Boolean testing, subroutines, and nested loops.