Statistics & probability
Lists, plots, regression, binomial and normal distributions. Every guide is scoped to the current AA SL course.
Edit & clear lists
You are preparing data for statistics, plots or regression.
Open guide1-Var Stats
You need summary statistics from raw or frequency data.
Open guideFrequency statistics
Each data value occurs multiple times and you should not expand the full list.
Open guideScatter plots
You need to inspect association between two variables before choosing a model.
Open guideLinear regression
Paired data show an approximately linear association.
Open guideOther regression models
A scatter plot is curved and theory suggests quadratic or multiplicative behavior.
Open guideResidual plots
You need to assess whether a regression model leaves structure unexplained.
Open guideBox plots & histograms
You need a visual summary of distribution, spread, median or frequency shape.
Open guidenPr & nCr
You are counting ordered arrangements or unordered selections.
Open guideRandom simulation
You need repeated random outcomes to model a simple experiment.
Open guideBinomial probability
X counts successes in a fixed number of independent trials with constant success probability.
Open guideBinomial wording
A binomial question uses words instead of an inequality.
Open guideNormal probabilities
A continuous variable is modeled by a normal distribution and you need an area/probability.
Open guideInverse normal
You know a cumulative probability/percentile and need the corresponding value.
Open guidez-scores
You need to compare a value with a normal mean and standard deviation.
Open guide