Education Technology

How Far Am I Off?

Activity Overview

Students calculate a confidence interval using the chi-square distribution to estimate a population variance.

Key Steps

  • Image

    Students review the chi-square distribution and discuss how the non-symmetric distribution requires them to find two critical values when calculating a confidence interval that estimates the population variance.

  • Image

    Then students are to calculate the 95% confidence interval for the population variance given the standard deviation of a random sample.