Lucy and Marissa each designed a box-and-whisker plot to represent this data set:
Their plots are shown below. Which plot is scaled correctly and why? Explain the mistakes in the incorrect plot.
What are the characteristics of a number line?
A number line should be spaced evenly with numbers that increase from left to right.
Part (a) is correct because the number line is equally spaced with numbers that increase by
Part (b) is incorrect. There are two number