JentooStatistics

AP® Statistics · Unit 1 · Topic 1.9

z-Scores and Relative Position

Watch it drawn3 questionsPractice

Watch it explained

  1. How it worksHow does a z-score turn any value into a number of standard deviations from the mean?
  2. Worked exampleFind the z-score for a 1310 SAT when the mean is 1050 and the standard deviation is 200.
  3. Common mistakeWhy isn't a negative z-score a bad thing to have on a golf score?

Check yourself

Your turn1 of 2
A data value is 1236 in a distribution with mean 1030 and standard deviation 236. Find its z-score.

End of topic.

Next: Comparing z-Scores Across Different Distributions →