Normality and Assumption Tests
Mauchly Sphericity Test Calculator
Mauchly Sphericity Test Calculator test sphericity in repeated measures.
Normality and Assumption Tests
Mauchly Sphericity Test Calculator
Test sphericity in repeated measures.
Formula
Mauchly test transforms the repeated-measures covariance matrix with orthonormal contrasts, computes W from its determinant and trace, and uses the corrected chi-square approximation. Greenhouse-Geisser and Huynh-Feldt epsilon are also reported.
About the Mauchly Sphericity Test Calculator
Test sphericity in repeated measures. Assumption tests evaluate a named aspect of distribution shape, variance equality, or repeated-measures covariance structure.
How the Mauchly Sphericity Test Calculator Works
Mauchly test transforms the repeated-measures covariance matrix with orthonormal contrasts, computes W from its determinant and trace, and uses the corrected chi-square approximation. Greenhouse-Geisser and Huynh-Feldt epsilon are also reported.
The calculation runs in your browser. Submitted values are validated for the required numeric range, data shape, units, and method-specific restrictions before a result is shown.
Required Inputs
- Data matrix (required)
- Alpha (required)
Results Reported
The result panel shows the final answer together with the intermediate quantities needed to audit the calculation. Depending on this method, reported values include:
methodsubjectsconditionscovariance_matrixcontrast_matrixtransformed_covariancedeterminanttracecorrection_factorw_statisticchi_square_statisticdfp_valuegreenhouse_geisser_epsilonhuynh_feldt_epsilonlower_bound_epsilonalphadecision
Mauchly Sphericity Test Calculator Example
Use the example data button to load a known sample, then calculate and review the statistic, p-value or estimate, and interpretation.
| Input | Example value |
|---|---|
| Data matrix | 8,9,11
7,10,12
9,11,13
6,8,10
10,12,15
8,10,12 |
| Alpha | 0.05 |
How to Use the Calculator
- Confirm that the calculator title and method match the quantity, test, conversion, or planning question you need to solve.
- Enter values with compatible units and the requested sample, group, matrix, count, date, or option format.
- Select Example Data to inspect a valid input layout, or enter your own values and select Calculate.
- Review the result table, formula, worked substitutions, warnings, and interpretation rather than using only the headline number.
- Use Copy Result or Download CSV when you need a reusable record of the displayed calculation.
Understanding the Result
Use plots and subject-matter judgment with p-values because assumption tests can have low power in small samples and excessive sensitivity in large samples.
Keep the entered values, units, selected options, and any warning shown beside the result. For a hypothesis test, report the statistic, degrees of freedom where applicable, p-value, alpha level, effect size, and decision. For an estimate or conversion, report the formula convention and final unit.
Accuracy and Limitations
The calculator keeps full browser precision during calculation and rounds only for display. Accuracy still depends on correct inputs and on whether the displayed model represents the real problem. Educational calculators cannot replace required professional review, current official rules, field measurements, laboratory methods, or specialist statistical software where those are necessary.
Frequently Asked Questions
What does the Mauchly Sphericity Test Calculator calculate?
Test sphericity in repeated measures.
Which formula does the Mauchly Sphericity Test Calculator use?
Mauchly test transforms the repeated-measures covariance matrix with orthonormal contrasts, computes W from its determinant and trace, and uses the corrected chi-square approximation. Greenhouse-Geisser and Huynh-Feldt epsilon are also reported.
What input does this calculator need?
The calculator form shows the required values and validates them before calculating.
Are the formulas visible?
Yes. Each calculator displays its method, assumptions, and interpretation unless disabled by the site administrator.