Extension - Old Fashioned Grading

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Before computer spreadsheets made organizing, sorting and working with my data easy, I used stem-and-leaf plots to help understand my students' data.
1. Stem-and-Leaf Plots could be handy for when I don't have a computer on hand.
2. I could use Stem-and-Leaf Plots while camping.
Here are 12 grades from the Metrics test. Make a stem-and-leaf plot to organize the data.
100, 80, 10, 80, 25, 100, 80, 10, 60, 100, 40, 65
1. Choose OK to continue.
2. Quit
3. Study
What is the range of these test scores?
1. 90
2. Study Stem-and-Leaf Plots
3. Study Range
Which mode of the test scores has the greatest value?
1. 100
2. Study Stem-and-Leaf Plots
3. Study Mode
What is the median of the test scores?
1. 72.5
2. Study Stem-and-Leaf Plots
3. Study Median
What is the mean of the test scores?
1. 62.5
2. Study Stem-and-Leaf Plots
3. Study Mean