Our site contains a lot of Statistical Calculators that can greatly help you with all of your academic needs. Our solvers include Probability Calculators, Hypothesis Test solvers, non-parametric tests, etc. If you have any suggestion about solvers that should be included, please do not hesitate to contact us.

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Effect Size Calculator – Cohen’s d

Instructions: This Statistics calculator will compute the Cohen’s d for you. Please provide the information required below: Sample Mean ($$\bar X$$) Population Mean ($$\mu$$) Population St. Dev. ($$\sigma$$)   More about Cohen’s D ...

Uniform Probability Calculator

Instructions: Compute uniform distribution probabilities using the solver below. Please type the lower limit $$a$$, the upper limit $$b$$, and define the event for which you want to compute the probability for: Lower (a) Upper (b) Two-Tailed: ≤ X ...

Normal Probability Calculator

Instructions: This Normal Probability Calculator will compute normal distribution probabilities using the form below, and it also can be used as a normal distribution graph generator. Please type the population mean and population standard ...

Correlation Coefficient Calculator

Instructions: You can use this tool to compute Pearson’s correlation coefficient for two variables X and Y. All you have to do is type your X and Y data, either in comma or space separated format (For example: “2, 3, 4, 5”, or ...

T-test for two Means – Unknown Population Standard Deviations

Instructions: This calculator conducts a t-test for two population means ($$\mu_1$$ and $$\mu_2$$), with unknown population standard deviations. This test apply when you have two-independent samples, and the population standard deviations ...

Minimum Sample Size Required Calculator – Estimating a Population Proportion

Instructions: This calculator finds the minimum sample size required to estimate a population proportion ($$p$$) within a specified margin of error. Please select type the the significance level ($$\alpha$$) and the required margin of error (E), ...