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Questions to be sure to include

  • A question that includes computer output, so that students have to identify the equation of the LSRL from the computer output.
  • A question that requires students to think about correlation versus causation.
  • A question that asks students to think about how an outlier affects the LSRL.
  • A question where students have to interpret r2.
  • A free response question which asks students to describe the relationship (DUFS!).
  • A free response question where students have to interpret the slope of the LSRL.
  • A free response question where students have to calculate and interpret a residual.
  • A free response question which asks students to provide more than one reason why a line is an appropriate model for a set of data.
  • At least one old AP question.  There are many to choose from and they are very accessible for students after completing this chapter.

Here are some tips to give your students

  • Close reading and careful writing are critical to your success this year.
  • Be sure to answer all parts of each question.
  • Know how to describe the relationship between two quantitative variables (DUFS!)
  • Know the many justifications you can use to argue that a data set can be modeled as a linear relationship.
  • Know how to interpret values (slope, y-intercept, residual, standard deviation of the residuals).

Quick tip for writing the test

Create an easy to understand context with some two-variable data and then you can ask several of your questions within that one context.  A good rule is one context for each page of the free response questions on your test.

On to Chapter 4!