SL 4.9—Normal distribution Topic Practice
SL 4.9—Normal distribution Topic Practice
Practise normal distribution probability, inverse normal values, standardising with z, and interpreting shaded regions, percentages and parameters.
How this is tested
- find probabilities such as P(W<170) or P(170<W<185) from a normal model and sketch
- use inverse normal or z=(x-μ)/σ to find a cut-off value, μ, σ or a constant such as A
- use symmetry and standard normal facts, including the 0.68 central area within 1 SD