Question 3 • Concepts in Probability and Statistics
A stem-and-leaf plot groups numbers by their tens digit and lists the ones digits beside each stem. These scores naturally group into the 80s (81, 84, 87) and the 90s (90, 93, 95, 97, 98), making the data easy to organize and compare. So the best choice is a stem-and-leaf plot because the data can be grouped into sets of 10.
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