This applet explores the velocity vector of a parametric curve, and its relationship to the chord r(t+h)-r(t) and the difference quotient.
This applet illustrates the connection between a confidence interval, a formal hypothesis test, and the p-value of a hypothesis test.
This applet gives a visualisation of the concept of statistical power, and helps illustrate the relationship between power, sample size, standard deviation and difference between the means.
This applet illustrates partitioning of variability into explained (fitted) and unexplained (residual) variability.
This applet illustrates the partitioning of variability into explained and unexplained variability, in the context of ANOVA.
This applet illustrates the effect of a linear transformation in R2 on the unit circle/unit disk, and the geometric meaning of eigenvectors, eigenvalues and determinant.
This applet displays the distribution for the order statististics of a sample of size n from an arbitrary population distribution.
This applet shows the maximum likelihood estimator and (log) likelihood function for several statistical models.
This applet illustrates the ε-δ definitions of the limit and continuity of a function. It can be used to investigate (non-)convergence or (dis)continuity of real functions, including the Dirichlet everywhere discontinuous function and variants.
This applet illustrates the definition of derivative as the limit of the gradient of a chord.