Dec 242014


The Chi-square goodness of fit test can be used to test whether observed data are different from expected values based on a hypothesis.  This test and lesson is a good introduction to statistical analysis of biological data for high school students.  They will test their hypotheses with data and make scientifically rigorous conclusions.

At the conclusion of the lesson, students will be able to:

  • Formulate a hypothesis to test.
  • Calculate expected values to test based on their hypothesis.
  • Calculate the Chi-square value using a Chi-square table.
  • Find the probability range for their Chi-square value and decide to support or reject their hypothesis based on the probability range.


Lesson Plan created by GK-12 Fellow Bonnie McGill, 2014