Education Technology

NSW: Z Scores

by Texas Instruments


  • Describe a z-score
  • Standard deviations from the mean
  • Use calculated 𝑧-scores
  • Compare scores from different datasets
Syllabus Outcome:
  • MS2-12-10


  • z-score
  • Mean
  • Expected value
  • Standard deviation
  • Percentile
  • Likelihood

About the Lesson

Students calculate and compare z-scores in a range of contexts including, Normally distributed football scores, computer game scores, student heights and light bulb life spans. Questions include an increasing degree of difficulty. Two support videos are available for this worksheet.

Watch the activity tutorial