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Glossary

Standard Score

A standard score, or ZZ-score, tells how many standard deviations a value lies from the mean, calculated by Z=xμσZ=\frac{x-\mu}{\sigma}. A positive score is above the mean and a negative one below.

Converting to ZZ-scores lets probabilities be read from the standard normal table.

Meaning

A standard score, or ZZ-score, tells how many standard deviations a value lies from the mean, calculated by Z=xμσZ=\frac{x-\mu}{\sigma}. A positive score is above the mean and a negative one below.

Converting to ZZ-scores lets probabilities be read from the standard normal table.

Where it appears in Add Math

You meet Standard Score in the Probability Distribution chapter of SPM Additional Mathematics. Knowing the term precisely matters in the exam: questions often hinge on reading a keyword correctly, and because SPM marking is analytic, using the right definition in your working helps secure method marks.

Our teachers make sure a student can not only recite what Standard Score means but use it fluently in a full solution.

The term in three languages

Because the SPM Add Math paper is bilingual (BM/EN), it helps to know this term in each language: Standard Score (EN) · Skor Piawai (BM) · 标准分 (中文)

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Written by the spmaddmath.com.my editorial team.· Last updated 5 September 2026

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