FREE NCEA Level 2 Probability Survival Notes (91267)

A free one-page summary for the NCEA Level 2 Probability exam (91267), on Thursday 19 November 2026, 9:30am.

ON ONE PAGE

• Probability rules: and, or, not, at least one

• Two-way tables and "given that"

• Relative risk, and how to say it in words

• Probability trees

• Expected numbers and evaluating claims

• The normal distribution, with a worked example

• Inverse normal, and finding a missing mean or SD

• Comparing distributions, and when a normal model doesn't fit

• Kola's exam tips

FORMAT: Instant PDF download (A4, one page). Free to share with classmates.

Want the full study guide? The NCEA Level 2 Probability Exam Survival Kit (91267) has 12 topic guides, 24 practice questions with worked answers and a full mock exam: payhip.com/MathTutorNz

Written by Kola at MathTutor. Not affiliated with NZQA.