A data set has values ranging from a low of $10$ to a high of $50.$ What's wrong with using the lass lifrits $10-20,20-30,30-$

$40.40-50$ fart

Each data value must fall into one class. Some data values do not have a class.

The class widths are too wide for the data range of $10$ to $50.$

The classes overlap so that some data values, such as $20,$ fall within two classes.

There is nothing wrong with using these class limits for the data set.