Population proportion意思

"Population proportion" is a statistical term that refers to the ratio of a certain characteristic or attribute within a population to the total number of individuals in that population. In other words, it is the fraction or percentage of the population that possesses a specific characteristic.

For example, if we are talking about the proportion of the population that has a certain disease, we would be referring to the number of people with the disease divided by the total population. If 10% of a city's population has a certain disease, then the population proportion for that disease in the city is 0.10 or 10%.

Proportions are often used in statistical analysis to describe the characteristics of a population or to compare different populations. They can be expressed as a decimal, a fraction, or a percentage, depending on the context and the preference of the person communicating the information.