The Ministry is migrating nzmaths content to Tāhurangi.
Relevant and up-to-date teaching resources are being moved to Tāhūrangi (tahurangi.education.govt.nz).
When all identified resources have been successfully moved, this website will close. We expect this to be in June 2024.
e-ako maths, e-ako Pāngarau, and e-ako PLD 360 will continue to be available.
For more information visit https://tahurangi.education.govt.nz/updates-to-nzmaths
A measure of spread for a distribution of a sample of numerical values that determines the degree to which the values differ from the sample mean.
It is calculated by taking the square root of the average of the squares of the deviations of the values from their sample mean.
It is recommended that a calculator or software is used to calculate the sample standard deviation.
The square of the sample standard deviation is equal to the sample variance.
A common symbol for the sample standard deviation is s.
The sample standard deviation is a (sample) statistic and is therefore an estimate of the population standard deviation.
See: measure of spread, sample variance, standard deviation
Curriculum achievement objectives references
Statistical investigation: Levels (6), (7), (8)
