Hello,
A discrete value is categorized, meaning it falls under certain specifications that place it within a category. On the other hand, a continuous variable can be measured, having an infinite number of possible values.
In this case, the thickness of something can be 1 meter, 1 inch, or even 1 mile. There are an infinite number of possible values, and the thickness is measured, not categorized, therefore it is a continuous value.
Hope this helps!
