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Ms. Whitney has thirteen students who did extra credit assignments to raise their grades. The scores on the assignments were , , , , , , , , , , , , and .  

  1. Make a stem-and-leaf plot of this data.

    What are the parts included in a stem-and-leaf plot? How can you use the data to find these parts?

  2. Find the median, and the first and third quartiles.

    Does a stem-and-leaf plot tell you any of this information?

    Median: , Q1: , Q3: