Education Technology

### Percentiles & Z-Scores

Students calculate percentiles, z-scores, and probabilities using normal distributions.
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family

### t Distributions

Students compare the t distribution to the standard normal distribution and use the invT command to find critical values for a t distribution.
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family

### Areas In Intervals

Students estimate and find a given area under a normal curve.
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family

### Assessing Normalcy

Students use four criteria to determine if a data set is normal. They begin by looking at a histogram to determine if it is symmetric and bell-shaped.
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family

### Is it Rare?

Students use the Poisson distribution to determine the probabilities for various numbers of hurricanes hitting the United States in a given year.
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family

### Percentiles - IB

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.

• TI-84 Plus CE Python
• TI-84 Plus C Silver Edition
• TI-84 Plus Silver Edition
• TI-84 Plus
• TI-84 Plus CE Family