Two Powerpoints for introducing and practicing standard deviation.

Standard Deviation ‘What it Means’ introduces the idea of spread with some examples then gives the full standard deviation for pupils to practice.

Standard Deviation ‘Practice Questions’ gives some examples for pupils to practice and full solutions.

I’ve also included short versions of each Powerpoint as a PDF if you prefer to use these as handouts.

Edit: added a page explaining about the standard deviation formulas