Statistik Rechner

Berechnen Sie mean, median, and mode of any dataset. Enter values — see all three averages, sorted data, frequency table, and range. Free.

Berechnen Sie variance and standard deviation. Schritt-by-step solution with formula, example dataset and interpretation guide.

Berechnen Sie confidence intervals for population means. Schritt-by-step solution with formula, example dataset and interpretation guide.

Rechnen Sie um correct answers to percentage and letter grade. Fast and accurate result with formula, Schritt für Schritt method and unit overview. Free tool.

Finden Sie the arithmetic mean of any set of numbers. Geben Sie Ihren values — see the mean, sum, count, and how each value affects the average. Free.

Berechnen Sie quartiles and IQR. Schritt-by-step solution with formula, example dataset and interpretation guide.

Finden Sie percentile rank of data values. Schritt-by-step solution with formula, example dataset and interpretation guide.

Berechnen Sie statistical variance. Schritt-by-step solution with formula, example dataset and interpretation guide.

Berechnen Sie z-score from any value, mean, and standard deviation. Geben Sie Ihren data — see z-score, percentile rank, and probability under the normal curve. Free.

Complete statistical summary of any dataset. Geben Sie Ihren values — see mean, median, mode, variance, standard deviation, and percentiles. Free.

Addieren Sie a list of numbers quickly and accurately. Geben Sie Ihren values separated by commas — see the sum, average, count, min, and max. Free.

Generieren Sie random numbers in any range with or without repetition. Enter min, max, and count — see your random numbers instantly. Free.

Pick random names from your list with equal probability. Enter names one per line — select one or multiple und erhalten Sie fair random results. Free.

Flip a fair coin and track results over multiple flips. Choose flip count — see heads/tails results with running probability statistics. Free.

Berechnen Sie Grade quickly and accurately. Geben Sie Ihren values — see the result with the formula, worked example, and unit options. Free.

Berechnen Sie GPA quickly and accurately. Geben Sie Ihren values — see the result with the formula, worked example, and unit options. Free.

Berechnen Sie Vote Prozentsatz quickly and accurately. Geben Sie Ihren values — see the result with the formula, worked example, and unit options. Free.

Generieren Sie stem-and-leaf plots from any dataset. Geben Sie Ihren values — see the completed plot with back-to-back option and median marked. Free.

Berechnen Sie required sample size for surveys and experiments. Enter confidence level, margin of error, and population — get the minimum n. Free.

Berechnen Sie margin of error for survey results. Enter sample size, confidence level, and proportion — get the margin of error and confidence interval. Free.

Run a chi-square goodness of fit or independence test. Enter observed and expected frequencies — see χ², p-value, and interpretation. Free.

Run a two-sample independent t-test. Geben Sie Ihren data sets — see the t-statistic, degrees of freedom, p-value, and statistical conclusion. Free.

Berechnen Sie Pearson or Spearman correlation coefficient. Enter paired data — see r value, r², and scatter plot interpretation. Free.

Berechnen Sie Spearman rank correlation between two variables. Enter paired data — see ρ, p-value, and monotonic relationship strength. Free.

Koeffizient of determination R². Formel, variable legend, diagram and worked example included. Instant geometry result.

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Berechnen Sie binomial distribution probabilities. Enter n, k, and p — see P(X=k), cumulative P(X≤k), mean, variance, and probability chart. Free.

Berechnen Sie Poisson probabilities for rare events. Enter λ (average rate) and k — see P(X=k), cumulative probability, and expected value. Free.

Berechnen Sie the geometric mean of any dataset. Enter values — see the nth root formula, result, log method, and comparison with arithmetic mean. Free.

Calculate the harmonic mean of any set of values. Enter your numbers — see n ÷ Σ(1/xᵢ) with result and comparison to arithmetic mean. Free.

Calculate weighted mean with custom weights for each value. Enter values and weights — see the weighted average with each contribution shown. Free.

Calculate IQR quickly and accurately. Enter your values — see the result with the formula, worked example, and unit options. Free.

Calculate the regression slope and linear equation from two variables. Enter your data — see slope, intercept, correlation coefficient, and residuals. Free.

Calculate statistical power for any study design. Enter effect size, sample size, and significance level — see power and minimum sample needed. Free.

Calculate the trimmed (truncated) mean by removing extreme values. Enter your dataset and trim percentage — see the robust average. Free.

Calculate probability for any event or distribution. Enter your parameters — see probability, odds, and expected value. Free.

Internal consistency reliability. Full formula with variable legend, worked example and step-by-step chemistry solution.

Analysis of variance across multiple groups. Step-by-step solution with formula, example dataset and interpretation guide.

Run a Mann-Whitney U test for non-parametric group comparison. Enter two datasets — see U statistic, p-value, and statistical conclusion. Free.

Compare the variances of two groups with an F-test. Enter both datasets — see the F statistic, p-value, and whether variances are equal. Free.

Understand Type I and Type II errors, alpha, beta, and statistical power. Enter your α, effect size, and n — see power and error probabilities. Free.

Determinant, inverse, addition and multiplication of 2×2 matrices. See formula, step-by-step solution and all rearrangements. Instant math solver.

Solve proportions and find missing values. Enter three of four values in a/b = c/d — see the missing value with cross-multiplication steps. Free.

Perform union, intersection, difference, and symmetric difference of sets. Enter set members — see the result with Venn diagram representation. Free.

Check divisibility by 2 through 12 with instant rule explanations. Enter any integer — see which numbers divide it evenly and the rule used. Free.

Calculate square root, cube root, or any nth root. Enter value and root index — see the exact result, decimal approximation, and verification. Free.

Detect outliers in any dataset using the IQR method. Enter your values — see Q1, Q3, IQR, whisker bounds, and identified outliers. Free.