Quote:
...
IQ scores are used for educational placement, assessment of
intellectual disability, and evaluating job applicants. In research contexts, they have been studied as predictors of
job performance[20] and
income.
[21] They are also used to study distributions of psychometric intelligence in populations and the
correlations between it and other variables. Raw scores on IQ tests for many populations have been rising at an average rate that scales to three IQ points per decade since the early 20th century, a phenomenon called the
Flynn effect. Investigation of different patterns of increases in subtest scores can also inform current research on human intelligence.
...
en.wikipedia.org
As can be seen in the link, there are a variety of IQ tests and uses. Hopefully this isn't beyond your low scoring capabilities to read and understand.