Data Visualizations – Assessment


Ask students to write individual responses to the reflection question at the end of the handout.

Review students’ responses to the questions in the Guided Practice section. Are they able to accurately identify the chart that is an honest depiction of the data set? Are their responses to the second question for each pair of graphs reasonable?

Answer Key – Guided Practice

Accept all reasonable responses.

Paired Graphs – 1

1.The graph on the right is the honest representation. By looking at the data tables it’s easy to see that the first graph shows survey takers’ top two choices combined (which is why the slices add up to more than 100%) and the second table reveals that the graph shows just the first choice for candidates.

2.Elliot right chart, Stefani chart on the left. When looking just at top choice, Elliot is ahead by two votes, when looking at top two choices, Stefani is ahead by five votes.

Paired Graphs – 2

1.The graph on the left is the honest representation. The z-axis on the left starts at zero and the intervals from 0 to 12. The y-axis on the right also starts at zero, but the numbers represented in the intervals are much larger, going from 0 to 100. This flattens the graph, minimizing the differences from year to year.

2.Use the graph on the right to convince school administrators that the financial investment in the football program is not paying off.

Answers to the Independent Practice activity will vary widely. Accept all reasonable responses.

Lead a full class discussion of each task on the handout to allow students to share their answers and explain the basis of their decisions.

Ask students to share their responses to the reflection question.

Data Visualizations