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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

  • Count to Probability

    This online calculator takes a list of events along with number of times the particular event occured and calculates the probability (and log probability) of each event by dividing event count to the total number of events.

  • Estimated Mean of a Population

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

  • Lagged scatterplot

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

  • Mann-Whitney Test

    This online calculator performs the Mann–Whitney U test (also called the Mann–Whitney–Wilcoxon (MWW), Wilcoxon rank-sum test, or Wilcoxon–Mann–Whitney test).

  • P-value

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

  • Paired Sample t-Test

    This online calculator performs t-Test for the Significance of the Difference between the Means of Two Correlated Samples

  • Probability Urn simulator

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

  • Text fitness

    This online calculator computes text "fitness". That is, how similar the given text to other texts written in English language.

  • Text fitness (version 2)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses frequencies of unigrams, bigrams and trigrams to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • Text fitness (version 3)

    This online calculator calculates measure known as fitness score, of how given text is similar to a typical English text. It uses logarithms of probabilites with normalization to calculate fitness score. The reference frequencies are calculated from Leipzig Corpora Collection and can be downloaded from http://practicalcryptography.com/cryptanalysis/text-characterisation/quadgrams/. The less value you get, the better.

  • Time Series Autocorrelation function (ACF)

    This online calculator computes autocorrelation function for given time series and plots correlogram

  • Time Series Decomposition

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

  • Two sample t-Test

    The calculator to perform t-Test for the Significance of the Difference between the Means of Two Independent Samples

  • 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.

  • Z-score from P-value

    This online calculator calculates z score from p value