Question

Write the relation between standard deviation of set of scores and its variance

Answer 1

The Standard deviation (σ) is the square of its variance (σ)²

• The standard deviation is the variance's square root. The standard deviation is in the same units as the mean, while the variance is in square units,
• As the standard deviation is the square root of its variance, it means that if the variance is 16, then the standard deviation is 4.