Statistics: Percentiles

Objectives

• Students will learn review the concepts of a normal distribution and its characteristics, including but not limited to percentiles and area under a normal curve.
• Students will practice how to use the handheld commands Normal Cdf and Inverse Normal.
• Students will try to make a connection with how to understand these topics in IB Mathematics courses and on their final assessments.

Vocabulary

• Percentile
• Normal Distribution
• Empirical Rule
• Probability
• Standard Deviation•Mean

About the Lesson

The goal of this activity is for students to use the area to the left of a value in a normal distribution to find its percentile. The process will then be reversed to find the value for a given percentile. In doing so, students will learn how to use the Normal CDF and Inverse Normal commands on the handheld.