¦ noun (plural **propensities**) an inclination or tendency.

C16: from archaic *propense* (from L. *propensus* 'inclined', past participle of *propendere*, from *pro-* 'forward, down' + *pendere* 'hang') + -ity.

1) a propensity for (a propensity for exaggerating)

2) a propensity to + *inf.* (he has a propensity to exaggerate)

A propensity to do something or a propensity for something is a natural tendency that you have to behave in a particular way. (FORMAL)

Mr Bint has a propensity to put off decisions to the last minute...

Propensity probability

The **propensity theory of probability** is a probability interpretation in which the probability is thought of as a physical propensity, disposition, or tendency of a given type of situation to yield an outcome of a certain kind, or to yield a long-run relative frequency of such an outcome.

Propensities are not relative frequencies, but purported *causes* of the observed stable relative frequencies. Propensities are invoked to *explain why* repeating a certain kind of experiment will generate a given outcome type at a persistent rate. A central aspect of this explanation is the law of large numbers. This law, which is a consequence of the axioms of probability, says that if (for example) a coin is tossed repeatedly many times, in such a way that its probability of landing heads is the same on each toss, and the outcomes are probabilistically independent, then the relative frequency of heads will (with high probability) be close to the probability of heads on each single toss. This law suggests that stable long-run frequencies are a manifestation of invariant *single-case* probabilities. Frequentists are unable to take this approach, since relative frequencies do not exist for single tosses of a coin, but only for large ensembles or collectives. These single-case probabilities are known as propensities or chances. Hence, it can be thought of as "meta-probability".

In addition to explaining the emergence of stable relative frequencies, the idea of propensity is motivated by the desire to make sense of single-case probability attributions in quantum mechanics, such as the probability of decay of a particular atom at a particular moment.

The main challenge facing propensity theories is to say exactly what propensity *means*, and to show that propensity thus defined has the required properties.

Pronunciation examples for Propensity

1. propensity.

2. You don't allow this propensity.

3. What is the genetic propensity?

4. Chronotype is basically your propensity.

5. human propensity for hivish behavior?

Examples of use of Propensity

1. Propensity score weighting was also used to adjust for respondents‘ propensity to be online.

2. Firstly, babies are born with a propensity to leukaemia.

3. He has given man the propensity to follow either.

4. Events currently in the news illustrate that propensity.

5. "Killing the education bit won‘t reduce the propensity towards sex.