AP® Statistics Beta
Tools
Statistics trainers: sampling distributions, data, sampling, experiments, probability, distributions, intervals, p-values, chi-square and regression.
Trainers
Work through a model or a representation, then answer questions about it.
- Data explorerDrag a point and watch the mean, median and spread respond.Summary Statistics for One Quantitative VariableOpen
- Sampling labDraw four kinds of random sample and see where bias comes from.Random SamplingOpen
- Design randomizerRandomize an experiment and see why it allows cause and effect.Experimental DesignOpen
- Probability treesSlice a two-way table and watch conditional probability appear.Conditional ProbabilityOpen
- Distribution areasShade the area and read the probability, normal or binomial.The Normal DistributionOpen
- Sampling distributionsWatch a sampling distribution build, sample by sample.Sampling Distributions and the Central Limit TheoremOpen
- Interval captureSee what 95% confident really means, one hundred intervals at a time.Justifying a Claim Based on a Confidence Interval for a Population ProportionOpen
- p-value explorerShade the p-value, then see Type I and II errors and power.p-ValuesOpen
- Chi-square labFill in expected counts and watch the chi-square statistic build.Carrying Out a Chi-Square Test for Homogeneity or IndependenceOpen
- Regression labDrag points and watch the least-squares line and residuals respond.Least-Squares RegressionOpen
Every tool records what you answer: missed questions go into your review queue, and your accuracy shows here and on the dashboard.