Education Technology

Statistics: How Far Am I Off?

by Texas Instruments - Bell Ringer Lesson

Overview

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

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Key Steps

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    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.

    They will practice finding the left and right critical values using a chart or the INVERSX2 program and then confirm that 95% of the area under the curve is between those two critical values.