Z-Scores and Percentiles
Grade 11th Grade · Math · 45 min
What's Included
Learning Objective
I can calculate z-scores and use them to determine percentiles in a normal distribution.
Warm-Up Video
CrashCourse · 10:55
Z-Scores and Percentiles: Crash Course Statistics #18
Guided Notes
3 key concepts
- 1
A z-score tells you how many standard deviations a data point is from the mean of its distribution.
- 2
To calculate a z-score, you subtract the mean from the raw score and then divide by the standard deviation.
- 3
Percentiles indicate the percentage of values in a distribution that fall below a specific score.
Practice Questions
7 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“A student scores 680 on the math portion of the SAT. If the mean score is 500 and the standard deviation is 100, what is the student's z-score? What percentile is associated with that z-score, assuming a standard normal distribution?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
