As the world's population increased five-fold since the start of the 20th century, the changes in the geographic distribution of the billions of people across the planet have been ongoing and ...

This applet allows users to specify a hypothesized population proportion, sample proportion and sample size as well as an alternative hypothesis and significance level. After changing the values, the ...

The global employment-to-population ratio – the proportion of the working-age population that is employed – has fallen from 62 per cent in 1991 to 60 per cent in 2015, with an especially ...

This web calculator conducts a z-test for the difference between two populations' proportions. The calculator includes an explanation of inputs and outputs. This web calculator conducts a z-test for ...

South Korea’s population continued to decline last year despite a slight rebound in births, with more than 450,000 people ...

Türkiye’s elderly population is living longer, with life expectancy reaching 77.3 years, reflecting advancements in health ...

Genetic variation is usually expressed as a relative frequency, which means a proportion of the total population under study. In other words, a relative frequency value represents the percentage ...

Türkiye's elderly population soared by 20.7% during the last five years to 9.1 million, the Turkish Statistical Institute ...

Further, the Terry Group researchers say it's not only overall population decline that poses a threat, but the climbing proportion of elderly people. In 1990, 5% of Chinese people were 65 or older.