Nine times out of ten

Pro Tip 1/3

Probability

The phrase suggests something happens 90% of the time but is not a precise statistic.

If you check his blog, nine times out of ten, there's a new post.

Pro Tip 2/3

Predictability

It indicates a high degree of certainty that an event will occur based on past occurrences.

Nine times out of ten, she answers the phone on the first ring.

Pro Tip 3/3

Casual Tone

The expression is informal, best for casual conversations, not for formal or academic writing.

Nine times out of ten, going by bus is cheaper than taking a taxi.