Statistical Consultation Line: (865) 742-7731
Accredited Professional Statistician For Hire
  • Contact Form

Non-probability sampling

Non-probability sampling techniques introduce selection biases into a research study

Non-probability sampling is used in observational research designs. The lack of randomization in these designs introduces selection and observation biases that can greatly skew the inferences yielded from statistical tests. However, these are important sampling methodologies that allow for researchers to use inclusion and exclusion criteria to purposefully seek out participants that meet certain criteria and study their outcomes. Non-probability sampling techniques are used to study rare outcomes, generate hypotheses, study associations, establish prevalence, and measure for odds and risk of developing disease states based on risk factors.

Two types of non-probability sampling methods

Specific groups of a population are targeted for participation in a study.
Purposive Sampling
The most prevalent form of non-probability sampling.  Researchers access retrospective data available to them.
Convenience Sampling

Click on the Sample Size button to continue.
Sample Size
Back to Sampling Methods
Research Engineer Home Page

Statistician For Hire

$100.00
Buy Now

DO YOU NEED TO HIRE A STATISTICIAN?

Eric Heidel, Ph.D. will provide statistical consulting for your research study at $100/hour. Secure checkout is available with PayPal, Stripe, Venmo, and Zelle.

  • Statistical Analysis
  • Sample Size Calculations
  • Diagnostic Testing and Epidemiological Calculations
  • Psychometrics

There are two types of non-probability sampling: Purposive sampling and convenience sampling.

Contact Dr. Eric Heidel
consultation@scalelive.com
(865) 742-7731

Copyright © 2022 Scalë. All Rights Reserved. Patent Pending.