Browse categories
Explore
Fiverr Pro
English
$
USD
I will analyze questionnaire or scale validity and reliability
Research, Healthcare, Statistics, Data Analysis
Hi, I'm Younes (Ph.D.). Research Expert, epidemiologist, and data analyst with experience (6+ Years) in research , biostatistics, questionnaire validation, and data analysis.
Whether you are working ...
About this Gig
Is your questionnaire ready for research?
I will evaluate the validity, reliability, and measurement properties of your questionnaire, survey, or scale using appropriate statistical methods.
Depending on your study and available data, the analysis may include:
Cronbach's alpha
McDonald's omega
Item-total correlations
Reliability if item deleted
KMO & Bartlett's test
Exploratory Factor Analysis (EFA)
Confirmatory Factor Analysis (CFA)
Factor loadings & dimensionality
Construct validity
Convergent & discriminant validity
Test-retest reliability / ICC when appropriate
Missing-data & item diagnostics
Publication-ready tables & figures
Clear statistical interpretation
I do not simply calculate Cronbach's alpha. I assess your instrument according to your research question, questionnaire structure, study design, and available data.
You can receive SPSS, R, or Jamovi outputs and a clear report explaining what your results mean.
Ideal for:
Master's & PhD research
Surveys and Likert-scale questionnaires
Questionnaire validation studies
Research manuscripts
Please contact me before ordering.
️My records: https://orcid.org/0000-0002-8015-4434
My Portfolio
FAQ
Do you only calculate Cronbach's alpha?
No. Depending on the study, I can evaluate several measurement properties, including internal consistency, dimensionality, factor structure and different forms of validity.
Can you validate my questionnaire before I collect data?
I can review the questionnaire and provide methodological/statistical guidance. However, statistical validation of measurement properties generally requires appropriate data.
Can you perform EFA?
Yes, when exploratory factor analysis is appropriate for the research question and dataset.
Can you perform CFA?
Yes. CFA can be included in the Premium package or a custom offer depending on the complexity of the model.
Can you analyze Likert-scale questionnaires?
Yes. I regularly work with survey and Likert-type instruments.
Can you analyze an existing questionnaire that I developed?
Yes. Send the questionnaire, codebook, study objective and dataset.
Can you analyze a translated questionnaire?
Yes. I can analyze available validation data. If you are developing a translated instrument, please provide details about the translation/adaptation process.
Will you guarantee that my questionnaire is valid?
No. Statistical evidence cannot be guaranteed in advance. I objectively analyze the available evidence and explain its implications.
Do you provide SPSS/R files?
Yes, depending on the selected package.
Can you format the results for a research paper?
Yes. Publication-ready tables and statistical interpretation can be included according to the selected package.
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S sshmsaab
United Arab Emirates
Ongoing collaborationI thank dr Younes for his help with my research, i thank him for taking the time and explaining everything to me and delivering work on time and dedication
$50
Price
1 day
Duration
Helpful?A amandacoceans
United States
They did an outstanding job leading the validation study for our assessment. Their feedback was clear, actionable, and grounded in strong psychometric insight. They helped elevate the quality and credibility of the tool while preserving its practical value. I highly recommend their work to anyone developing assessments or diagnostics.
$50
Price
7 days
Duration
Helpful?H 
hayasulaiman96
Saudi Arabia
Thank you immensely! I truly enjoyed this experience, as he provided a thorough explanation of everything, despite my lack of experience. His invaluable advice guided me on what to do and what to avoid. I'm truly grateful and highly recommend him!
$50
Price
2 days
Duration
Helpful?A adsum88
United States
Younes is exceptional. He is a good listener, understands requirements well, and works collaboratively with a high level of trust. He is attentive to detail, proactive in clarifying requests, and asks thoughtful, intelligent questions. I highly recommend working with Younes.
$50
Price
3 days
Duration
Helpful?
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S sshmsaab
United Arab Emirates
Ongoing collaborationI thank dr Younes for his help with my research, i thank him for taking the time and explaining everything to me and delivering work on time and dedication
$50
Price
1 day
Duration
Helpful?A amandacoceans
United States
They did an outstanding job leading the validation study for our assessment. Their feedback was clear, actionable, and grounded in strong psychometric insight. They helped elevate the quality and credibility of the tool while preserving its practical value. I highly recommend their work to anyone developing assessments or diagnostics.
$50
Price
7 days
Duration
Helpful?H hayasulaiman96
Saudi Arabia
Thank you immensely! I truly enjoyed this experience, as he provided a thorough explanation of everything, despite my lack of experience. His invaluable advice guided me on what to do and what to avoid. I'm truly grateful and highly recommend him!
$50
Price
2 days
Duration
Helpful?A adsum88
United States
Younes is exceptional. He is a good listener, understands requirements well, and works collaboratively with a high level of trust. He is attentive to detail, proactive in clarifying requests, and asks thoughtful, intelligent questions. I highly recommend working with Younes.
$50
Price
3 days
Duration
Helpful?
