5 Number Summary Calculator
Calculate the five-number summary of your dataset including quartiles
Use CalculatorStatistics & Data Calculators
Summarize data or examine probability with tools ranging from averages to distributions. Choose a method that fits your data and question, and interpret results in context.
Data Analysis and Statistical Tools
Start with the question: use mean or median to describe a center, standard deviation to examine spread, and a probability tool only when its assumptions fit the data. Enter the complete relevant dataset and check how missing values are handled.
For example, the mean can be pulled by outliers while the median may describe a skewed set more clearly. A computed statistic does not establish causation, representativeness, or a valid sampling design.
Who Are These Calculators For?
Useful for coursework and initial data checks. Interpret each statistic alongside sample size, data quality, and the method stated on the calculator page.
24 calculators available
Absolute Deviation Calculator
Calculate average absolute deviation from mean or median to measure data spread
Use CalculatorClass Rank Calculator
Calculate your class rank and percentile to understand your academic standing
Use CalculatorCoefficient of Determination Calculator
Calculate R² to measure regression model fit and variance explained
Use CalculatorCoefficient of Variation Calculator
Calculate CV to measure relative variability and compare data dispersion
Use CalculatorCovariance Calculator
Calculate covariance and correlation to analyze relationships between variables
Use CalculatorDegree of Freedom Calculator
Calculate degrees of freedom for statistical tests
Use CalculatorFrequency and Relative Frequency Calculator
Calculate frequency and relative frequency distributions
Use CalculatorGeometric Distribution Calculator
Calculate geometric distribution probabilities and statistics
Use CalculatorGrade Curve Calculator
Calculate curved grades using different curve methods
Use CalculatorHypothesis Testing Calculator
Perform hypothesis testing with Z-test and t-test
Use CalculatorInverse Normal Distribution Calculator
Find the x-value for a given probability in a normal distribution
Use CalculatorMean Absolute Deviation Calculator
Calculate the mean absolute deviation of your dataset
Use CalculatorMedian Calculator
Calculate the median and quartiles of your dataset
Use CalculatorMedian Speed Calculator
Calculate the median speed from distance and time measurements
Use CalculatorMode Calculator – Statistical Mode
Calculate the most frequently occurring value in a data set
Use CalculatorNormal Distribution Calculator – Gaussian Distribution
Calculate probabilities and z-scores for normal distribution
Use CalculatorPearson Coefficient Calculator – Correlation Coefficient
Calculate correlation coefficient between two data sets
Use CalculatorPercentile Calculator – Statistical Percentile
Calculate percentiles and understand data distribution
Use CalculatorShannon Entropy Calculator – Information Entropy
Calculate information entropy and uncertainty in probability distributions
Use CalculatorStandard Deviation Calculator
Calculate population and sample standard deviation for any dataset
Use CalculatorStem and Leaf Plot Calculator – Data Visualization Tool
Generate stem-and-leaf plots to visualize data distribution patterns
Use CalculatorType II Error Calculator – Beta and Statistical Power
Calculate Type II error probability and statistical power for hypothesis testing
Use CalculatorWeighted Average Calculator
Calculate weighted average accounting for the importance of each value
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