Statistics is as much art as science. For many of our clients, this is most evident when drawing a sample from a larger population of clien...
Statistics is as much art as science. For many of our clients, this is most evident when drawing a sample from a larger population of clients, target audiences, or stakeholders, or when determining what research design is best for eliciting the information you need.
For each of these steps, one must always work within a set of real-world constraints – budgetary, temporal, legal, socio-political, human capital – to develop the best information you can to inform your organization’s decision making.
At YoStatistician Consultancy, we help our clients bridge many of these constraints by harnessing our elite team of statisticians. Over more than a decade, we’ve cultivated a team of analysts who are creative and innovative, if not truly artistic, when it comes to developing the most rigorous sample and study design possible for your budget, timeline, and legal or socio-political parameters.
Whether you’re just starting, already have a sample and research design in mind, or have your data and results in-hand, YoStatistician Consultancy statistical consulting team can provide detailed, customized reports on optimal sampling, design, methodology, and measurement, including expert commentary and recommendations on the following:
At YoStatistician Consultancy, we help our clients bridge many of these constraints by harnessing our elite team of statisticians. Over more than a decade, we’ve cultivated a team of analysts who are creative and innovative, if not truly artistic, when it comes to developing the most rigorous sample and study design possible for your budget, timeline, and legal or socio-political parameters.
 |
| Sampling and Validity - The Science and Art Of Statistics! |
- Sampling frame development.
- Random sampling.
- Stratified random sampling.
- Weighted samples.
- Nonprobability sampling.
- Snowball and convenience sampling.
- Purposive sampling.
- Sample validity.
- Sample reliability.
- Sampling bias.
- Non-response bias.
- Statistical power sample testing.
- Post hoc power analysis.
- Experimental research design.
- Quasi-experimental research design.
- Pre-experimental research design.
- Non-experimental research design.
- Internal validity.
- External validity.
- Statistical conclusion validity.
- Theoretical validity.
- Measurement validity.
- Measurement reliability.
- Convergent validity.
- Divergent validity.
- Inter-item validity.
- Inter-coder reliability.
Our team includes not only dedicated advanced degree methodologists but also academics and subject matter experts who can bridge the gap between statistics and real life, providing the modelling and measurement critiques that reflect both statistical and intuitive strengths and shortfalls.
After working closely with clients to finalize the basic structure and general aims of planned research design and methodology, we always advise statistical tests on model reliability and statistical power. At YoStatistician Consultancy, we ensure our clients’ analysis rests upon a good statistical methodology—with broad reliability and validity, robust results under changes in underlying assumptions, and high statistical power (without sacrificing confidence level).
Just as important, our statistical consulting team emphasizes strong experimental and quasi-experimental research designs to enable valid causal inferences, so that you do not have to rely solely on the statistics and can avoid scepticism related to simultaneity bias and omitted variable bias. YoStatistician Consultancy can assist you with ensuring that each of these critical elements is present in your research design and methodology, as well as provide you with a full report outlining potential weaknesses and improvements to your model.
Sample Size and Selection Validity: YoStatistician Consultancy’s team has also provided specific assistance to dozens of firms with pre-emptive subsample selection as well as post hoc analysis for firms mediating disputes over subsample validity. One of the issues that we see repeatedly in our statistical consulting work is the issue of the minimum required sample size. For clients seeking to estimate the needed sample size for a prospective study, we conduct a prior statistical power analysis to determine the minimum sample size, and then randomly select the sample from the target population to meet these criteria (with or without stratification).
For clients who have already completed statistical analysis and need to resolve a dispute about the validity of the subsample, model, and/or measures, our statisticians can perform a post hoc power analysis. We’ll rigorously compare your sample demographic and descriptive characteristics to the population to check for discrepancies, and compute and report the effective power of the results.
If you have specific questions about how we might provide statistical consulting services for your current sampling or validity needs, don’t hesitate to contact us for an initial consultation.
With about 10 years of experience providing highly complex statistical analysis and consulting across a broad range of industries, we can provide you with tailored support on virtually any timeline.
After working closely with clients to finalize the basic structure and general aims of planned research design and methodology, we always advise statistical tests on model reliability and statistical power. At YoStatistician Consultancy, we ensure our clients’ analysis rests upon a good statistical methodology—with broad reliability and validity, robust results under changes in underlying assumptions, and high statistical power (without sacrificing confidence level).
Just as important, our statistical consulting team emphasizes strong experimental and quasi-experimental research designs to enable valid causal inferences, so that you do not have to rely solely on the statistics and can avoid scepticism related to simultaneity bias and omitted variable bias. YoStatistician Consultancy can assist you with ensuring that each of these critical elements is present in your research design and methodology, as well as provide you with a full report outlining potential weaknesses and improvements to your model.
Sample Size and Selection Validity: YoStatistician Consultancy’s team has also provided specific assistance to dozens of firms with pre-emptive subsample selection as well as post hoc analysis for firms mediating disputes over subsample validity. One of the issues that we see repeatedly in our statistical consulting work is the issue of the minimum required sample size. For clients seeking to estimate the needed sample size for a prospective study, we conduct a prior statistical power analysis to determine the minimum sample size, and then randomly select the sample from the target population to meet these criteria (with or without stratification).
For clients who have already completed statistical analysis and need to resolve a dispute about the validity of the subsample, model, and/or measures, our statisticians can perform a post hoc power analysis. We’ll rigorously compare your sample demographic and descriptive characteristics to the population to check for discrepancies, and compute and report the effective power of the results.
 |
| Sampling and Validity - The Science and Art Of Statistics! |
With about 10 years of experience providing highly complex statistical analysis and consulting across a broad range of industries, we can provide you with tailored support on virtually any timeline.
Let’s keep it a secret ...
Before sharing your materials with us, we will send you our Non-Disclosure Agreement, which guarantees that your work materials, and even your identity as a client, will never be shared with a third party.
Request Quote: YoStatisticican Consultancy exists to assist research students, research candidates, research institutes, and corporates in statistical analysis, data analysis, data science, data analytics, data management, data mining, and much more!!!
Address: 21 Joe Slovo, Zumaysha House, Durban 4001, South Africa.
Landline: 031 305 0010
Mobile | WhatsApp: 067 851 2614
Email: enquiries@yostatistician.com
Request Quote: YoStatisticican Consultancy exists to assist research students, research candidates, research institutes, and corporates in statistical analysis, data analysis, data science, data analytics, data management, data mining, and much more!!!
Address: 21 Joe Slovo, Zumaysha House, Durban 4001, South Africa.
Landline: 031 305 0010
Mobile | WhatsApp: 067 851 2614
Email: enquiries@yostatistician.com
- Advertisement -
Read More At The Online Coronavirus Portal Or Use The 24-Hour Public Hotline:
South Africa: 0800 029 999 or just Send Hie to 0600 123 456 on WhatsApp
Think Mzansi is a free to use platform and the views and opinions expressed herein are solely those of the author and do not represent, reflect or express the views of Think Mzansi. Any/all written content and images displayed are provided by the blogger/author, appear herein as submitted by the blogger/author and are unedited by Think Mzansi. Read More Here.
Think Mzansi Brand as a Durban-based online portal aims to help other South African brands to get off to the best start possible. We support local entrepreneurs and want to empower them to communicate their new business offerings effectively.
- Advertisement -
