Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Probability
Medically reviewed by Min Clinic Staff | Updated: January 2026
Probability: The likelihood that something will happen. For example, a probability of less than .05 indicates that the likelihood of something occurring by chance alone is less than 5 in 100, or 5 percent. This level of probability is usually taken as the level of biologic significance, so a higher incidence may be considered meaningful. Abbreviated p.