∑ Statistical Societal Services

Who we are

∑sss Inc. is an innovative and knowledge-based Consulting company providing competitive statistical analysis services to researchers, companies, business owners, and students.

∑sss recognizes customers challenges and provides ideal solutions for your questions and practical challenges by performing the effective analytical and statistical methodology.

Our Team

Seyed Sajjadi , PhD

Seyed obtained his Engineering degree from
UWO, MSPH and PhD from Lorraine University-France.

He is Bilingual, Statistical Data Programmer and Data Analyst,Research Analyst, and Expert in statistics and biostatistics methods
as applied to the fields of engineering, medical, public health sciences,and clinical trials.
He has 7 publications in the international journals and conferences.

Niloofar Shariat

Holds a Master in Social Sciences and
research methodology , She has over 10
years’ experience in social survey for
organizations, business and government.

Niloofar is specialist in research team
management, survey planning, and data
analysis. She has vast knowledge in application
of modern theories of social sciences for meeting
local needs of social and educational segments.

Consulting Services

Visualization your data, based on your needs. Establishing your hypotheses and research questions. Inputting, organizing, and cleaning the data. Implementing the statistical analyses.

Testing reliability (such as Cronbach’s alpha, test-retest reliability, split-half reliability, and inter-rater reliability) and validity (such as content validity, construct validity, criterion validity, internal validity, and external validity).


Statistical Consulting

Technical support allowing unlimited e-mail and phone support to ensure that you completely understand the output.