Website terms

This website is operated by Dr Arash Ardalan, trading as ezyStat, an independent statistical consultancy based in the United Kingdom.

Postal address: 91 Prince Andrew Way, Ascot, Berkshire, SL5 8NH, United Kingdom.

For questions about the website, resources or a proposed project, contact [email protected]. Contact and engagement details are provided with a written project proposal before work is agreed.

The website describes services and provides general educational information. Guides, examples and calculators need to be considered in the context of your own question, data and study design. They do not replace advice commissioned for a specific project.

Figures, dashboards and worked examples use simulated, hypothetical or illustrative data unless a source is identified. They are not presented as client results or evidence of an actual commercial outcome.

The sample size calculator is a planning aid for estimating a single population proportion under its stated assumptions. Comparisons, interventions, complex sampling and other outcomes may require a different calculation.

Submitting an enquiry starts a discussion. It does not commit you to purchasing a service or create an agreed project. Scope, deliverables, timetable, fees, payment arrangements, confidentiality and any data processing requirements are set out separately in a written proposal or engagement agreement.

Work begins after the relevant terms have been agreed. Academic support is provided as consultancy, review and training in line with the applicable institution’s academic integrity requirements.

Website text, original graphics and resources belong to Dr Arash Ardalan unless another owner or source is identified. You may use the free resources for your own learning and internal project planning, and share links to this website.

Please request permission before reproducing substantial material or using it commercially. Any rights and exceptions provided by copyright law continue to apply. External materials remain subject to their owners’ terms.

Use the website lawfully. Do not misuse the enquiry form, interfere with the website or submit information you do not have permission to share. Please keep initial enquiries free of datasets and sensitive personal information.

External websites are operated independently and their content, availability and terms may change. Links are provided for reference.

Reasonable care is taken with website content, but information may need correction or updating. The appropriate use of a statistical method depends on the question, data and assumptions. Please contact us if you identify an error.

Nothing on this page excludes or limits liability that cannot lawfully be excluded or limited, or removes any mandatory consumer rights. Responsibilities and any agreed limits relating to commissioned services are addressed in the engagement agreement.

See the privacy policy and cookie policy for information about enquiries, security verification and personal information.

These website terms are governed by the law of England and Wales. Any mandatory protections applicable to a consumer in their place of residence continue to apply. These terms may be updated; the version date is shown at the top of this page.