Complementary Error Function (erfc) Calculator
Complementary Error Function (erfc) Calculator
The complementary…
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Error Function (erf) Calculator
Compute the error function:
$$ \operatorname{erf}(x) \approx \operatorname{sgn}(x)\Bigl[1-\Bigl(a_1t + a_2t^2 + a_3t^3 + a_4t^4 + a_5t^5\Bigr)e^{-x^2}\Bigr], $$
where \( t=\frac{1}{1+0.3275911\,|x|} \).
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Cumulative Binomial Probability CalculatorCumulative Binomial Probability Calculator
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Multiple Regression F-Value and p-Value Calculator
Compute the overall F‑statistic and its p‑value using the formula:
$$ F=\frac{R^2/p}{(1-R^2)/(n-p-1)}. $$
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Enter the Pearson correlation coefficient (r) and sample size (n) to compute the t-statistic and two-tailed p-value, helping you assess the significance of the observed correlation. Note: This is an approximation; for critical analyses, use professional statistical software.
Correlation p‑Value Calculator
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This tool computes the F-statistic and corresponding p-value for a one-way ANOVA. Enter the Sum of Squares Between (SSB), Degrees of Freedom Between (dfB), Sum of Squares Within (SSW), and Degrees of Freedom Within (dfW) to determine the F-value and p-value. For high-stakes decisions, verify results with professional statistical software or consult a statistician.…
Inverse Error Function (erf⁻¹) CalculatorInverse Error Function (erf⁻¹) Calculator
Value of y (-1 < y < 1):
Calculate erf⁻¹(y)
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Binomial Distribution Calculator
For parameters \(n\) (number of trials) and \(p\) (success probability),
the PMF is:
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Use our Negative Binomial Distribution Calculators to calculate Negative Binomial Distribution variance, mode, median, mean, CDF, PDF, and PMF
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Use our Poisson Distribution Calculators to models the probability of a given number of events occurring within a fixed interval of time, given a constant mean rate of occurrence and independence between events.
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