#### Understanding

Students should recognize that in a bar graph, bars represent quantitative measures associated with categorical data. Whereas, the bars in histograms represent frequencies associated with quantitative values.

### What to look for

Students consider what they can learn from different representations of the same data using a dot plot, a box plot and a histogram.### Sample Assessment

Which of the segments represents the median and IQR?

Answer: The shorter segment that goes from 0 to just less than 40 because the distribution is skewed, the median is not in the center of the segment