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Explore teaching strategies to help students succeed on the ACT® math test using TI technology.
Students explore percentiles and z-scores of normal distributions by graphing and calculating.
The activity begins with a review of the properties of normal curves along with a visual representation of the corresponding percentages. The worksheet then introduces z-scores and percentiles.
Students are given a range of x-values and asked to find the probability (or percent) of data that fall within the interval.
In the last two parts, students are to find the corresponding x-value given a percentile and then given a z-score and they are asked to find the corresponding percentile and x-value.
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