Modeling data distributions videos

Calculating percentile

Analyzing a cumulative relative frequency graph

Normal distribution problem: z-scores (from ck12.org)

Comparing with z-scores

How parameters change as data is shifted and scaled

Density Curves

Density curve worked example

Worked example finding area under density curves

Median, mean and skew from density curves

Qualitative sense of normal distributions

Normal distribution problems: Empirical rule

More empirical rule and z-score practice (from ck12.org)

Standard normal distribution and the empirical rule (from ck12.org)

Standard normal table for proportion below

Standard normal table for proportion above

Finding z-score for a percentile

Standard normal table for proportion between values

Threshold for low percentile

Deep definition of the normal distribution