Anecdotal evidence refers to someone's testimony that a particular thing is true, false, related, or unrelated on the basis of the person's experience. Companies make use of anecdotal evidence for advertising today. Whenever you see a testimonial of a particular product on how effective the product is based on a person's personal experience, the company is using anecdotal evidence to encourage sales.
Jonah was reported to have lost several pounds because he switched to healthier. That was the testimony of Jonah. Anaecdotal evidence was used here.
