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Activity 4(to be
completed in the computer lab)
1. Using the spreadsheet that was created in the previous activity, delete
the data for the 3 heaviest cars and
create a new scatter plot.
2. Introduce and discuss
the term “least squares linear regression”.
3. Compare the plot from yesterday and the new plot. Discuss the
differences and likeness of the 2 plots.
4. Students will print copies of their scatter plots to put into their Math
Journal and write a brief comparison
of the two.
Activity 5(allow
2-3 days for this activity)
1. Students may work in pairs. They will collect data showing the
measurements of their classmates
foot length, to the nearest half inch, and their height, to the nearest half inch.
2. Students will enter the data into Excel or the graphing calculator.
3. Then, have them create a scatter plot.
4. Students will create a print of their scatter plot, put into their Math
Journal and write a brief summary about what the shape of the data points tells
them about the relationship between
foot length and the height of their classmates.
Activity 6
1. Students use 2
variables of their own choosing. (You will have to make suggestions for some of
the children. It would probably be helpful to have a list of choices
available for those students having trouble coming up with their own ideas.
2. Students will collect the data needed and create a
scatter plot for the data, using graph paper, Excel, or the graphing
calculator.
3.
Students will write in their Math Journal, describing
what they did to create the scatter plot and what it shows about the
relationship of the 2 variables.
4. Students will present their scatter plots to their
classmates along with a discussion of the shape of the data and possible
causality. They should be ready to answer questions from classmates.
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