Polynomial Regression vs Stats Solver by ChatStick

Polynomial Regression is your calculator and, more importantly, learning tool. You will be able to: * Construct polynomials of up to 20 degrees from either real or complex roots. * Interpolate polynomials from points by Lagrange, Newton or Vandermonde methods and Quadratic or Cubic splines. * Perform Least Squares approximation by orthogonal projection, with or without QR factorization, or partial derivatives. * Learn about each of the algorithms with derivations, proofs, step by step demonstrations, and visual tools. * Have an option to enter data by either typing or tapping on XY plane, and save data sets between program runs.

Stats Solver helps students, teachers, and analysts compute statistics quickly and understand the results. What you can do: - Calculate core statistics instantly: mean, median, mode, variance, standard deviation, quartiles, IQR, min/max, range, and more. - Build grouped frequency tables with relative and cumulative frequencies. - Use probability tools including factorial, permutation, combination, binomial probability, z-score, normal distribution, t-score, poisson, and uniform distribution. - Unlock advanced statistics tools such as covariance, correlation coefficient, linear regression, outlier detection, skewness, kurtosis, confidence interval, z-test, t-test, chi-square test, and ANOVA. - Visualize data with charts like histogram, bar chart, and normal curve. - Learn with step-by-step explanations for selected calculations. - Import data from CSV/TXT and export results back to CSV. - Save and pin datasets for faster reuse. - Keep a searchable history of your calculations. - Customize decimal precision, sample/population mode, haptics, and app theme. Built for learning and productivity, Stats Solver combines practical calculators with clear explanations so you can move from input to insight in seconds. Premium (one-time purchase): - Remove all ads - Unlock advanced tools and premium formulas - Access full step-by-step learning features - Save more datasets and use premium workflows - Includes future premium features with no subscription