Plot A has a range of 24-21 = 3, which is the same as the range for plot B as well (both have the same max and min).
However, plot A has a single mode of 21 because the most values occur here as shown by the tallest stack of dots; while plot B has two modes of 23 and 24. It is possible to have more than one mode.
Side note: we can say that plot A has a skew to the right because most of the values are clumped on the left. We can also say that plot B is skewed left for opposite reasons.
