Let's say we are curious about a trend where the time taken to read a book increases with respect to the page count.
Books often have a gripping effect on a reader, once they find them interesting. So, we cannot expect the number of pages to proportionately grow with the number of days taken to read a book, because books that the reader finds gripping will be read at a faster pace than others. In any dataset, there are samples that are noisy and hard to explain. In this dataset, we will find that some books with lower page counts take more days to finish than books with higher page counts.
It will be useful to look at the number of samples we have available for each group, defined by number ...
