# 12/3/2010 ©Evergreen Public Schools 2010 1 Compare Histograms.

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12/3/2010 ©Evergreen Public Schools 2010 1 Compare Histograms

©Evergreen Public Schools 2010 2 Learning Target I can use appropriate summary statistics to compare and describe sets of data and write a conclusion from the data. Name some summary statistics you already know.

©Evergreen Public Schools 2010 3 LaunchLaunch How the ways could you compare the ages of the parents of students in Mr. DeHaas’ class? How can we compare the results of the canned food drive from Mountain View HS and Woodland Middle School? What is different about the each comparison (parents and food drive)?

©Evergreen Public Schools 2010 4 ExploreExplore

Ages of Parents How old is your mother? How old is your father? What do you expect to see when we compare the ages of parents of students? ©Evergreen Public Schools 2010 5

6 motherfathermotherfathermotherfather 344448462629 4539454257 5049403949 366734403942 363834383541 404349663454 312947583537 4050494347 353837424845 50414443 31355047 35 40

©Evergreen Public Schools 2010 7 Ages of Parents We can use Excel to make a scatterplot. What does the scatterplot tell us?

©Evergreen Public Schools 2010 8 We can use Excel to add a line that models the data. What does the scatterplot with the line tell us?

©Evergreen Public Schools 2010 9 Wy’East and Woodland Middle Schools had each 2 nd period class collect cans for the Food Drive. How can we use graphs to compare the food collected in each schools Food Drive? Write a question. What kind of graphs can we use?

©Evergreen Public Schools 2010 10 Use histograms to compare the cans of food collected. Answer your question. Write everything you can.

©Evergreen Public Schools 2010 11 What more can we learn about the ages of parents with two histograms? Write everything you can.

©Evergreen Public Schools 2010 12 Team Practice We will compare the Voter turnout for counties in Washington state 2008 an 2010 elections. What is a question we might ask that can be answered by looking at a graph of both sets of data?

©Evergreen Public Schools 2010 13 Compare the Voter turnout for counties in Washington state 2008 and 2010 elections. Answer your question. What do you know about the differences?

©Evergreen Public Schools 2010 14 Debrief What can you look for when you compare two histograms?

©Evergreen Public Schools 2010 15 5 3 1 2 4 Learning Target Did you hit the target? I can use appropriate summary statistics to compare and describe sets of data and write a conclusion from the data. Rate your understanding of the target from 1 to 5. 5 is a bullseye!

©Evergreen Public Schools 2010 16 Practice Practice 9-5A Compare Histograms