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• Centered Moving Average

  This online calculator calculates centered moving average, which is used instead of moving average then number of periods is even

• Combinations generator

  This online calculator generates all possible combinations of items from different sets/lists

• Estimated Mean of a Population

  This online calculator allows you to estimate mean of a population using given sample

• Gaps and missing numbers finder

  This online calculator helps you find gaps and missing numbers in a sequence of numbers.

• Lagged scatterplot

  This online calculator builds scatterplot of the time series against itself offset in time

• Mean, variance and standard deviation of discrete random variable

  This online calculator calculates mean, variance and standard deviation of random variable entered in the form of value-probability table

• Noisy function generator

  This online calculator takes function, calculates its values for given range and then adds some random noise to distort original values.

• P-value

  This online calculator calculates p-value for one sided and two sided tests given the z-score

• Probability Urn simulator

  This calculator simulates urn or box with colored balls often used for probability problems and can calculate probabilities of different events.

• Random combination of numbers from specified range

  This calculator randomly picks several numbers from specified range.

• Time Series Decomposition

  This online calculator decomposes time series by extracting seasonality and trend from data

• Tips and tricks #10: Dynamic table columns

  This article describes how to work with dynamic columns in your calculator

• Tips and tricks #8: How to reuse existing calculator

  This article describes process of reusing another calculator's logic (algorithm) in your calculator.

• Tips and tricks #9: Big numbers

  How to use big number input and PCR library.

• Z-score / Standard score

  This online calculator computes the standard score of a raw score from the given mean of the population and the standard deviation of the population.

• 3d coordinate systems

  Transforms 3d coordinate from / to Cartesian, Cylindrical and Spherical coordinate systems.

• Bayes’ theorem

  This online calculator calculates posterior probabilities according to Bayes’ theorem.

• Bernoulli trials table

  This online calculator calculates probability of k success outcomes in n Bernoulli trials with given success event probability for each k from zero to n.

• Bisection method

  The bisection method in mathematics is a root-finding method that repeatedly bisects an interval and then selects a subinterval in which a root must lie for further processing. The method is also called the interval halving method.

• Complex numbers

  The calculator displays complex number and its conjugate on the complex plane, evaluate complex number absolute value and principal value of the argument . It also demonstrates elementary operations on complex numbers.