No, having a low IQ does not necessarily mean an individual is dumb; people with low IQ take more time to process things (they have slow processing capacities). This means they take a longer time than most people would in doing things that require thinking and processing a lot of information.
It is possible for someone to be smart and have a low IQ, what this means is that the person has a slow processing capacities and not necessarily dumb.
Remember IQ just access abstract intelligence. There are many other forms of intelligence that also contribute to an individual’s level of smartness.
No. People that have a low IQ are not necessarily dumb, but they may take a longer time than most people to learn and take tests. Some might be inept in a particular subject, such as math or science, but they may also excel at reading and writing.
Someone can be smart but not be able to think as fast as others or understand things in an instant. Some brilliant people have scored a low IQ on tests. Also, there are diverse types of intelligence. IQ scores are only an indicator, which only indicates abstract intelligence.