Compare two stem-and-leaf data sets using mean and median, then decide which class or group did better on average. The first five questions scaffold the method; the final fifteen expect students to calculate and justify the comparison.
Turn each stem and leaf into a data value using the key.
Add all values, then divide by how many values there are.
Find the middle value, or average the two middle values for even data sets.
Use mean and median to choose which group did better.
0 correct out of 20.
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