Point Estimation

This applet illustrates a sequence of statistical estimates as new data are added. When the applet loads, it shows the first sequence as a red line. A mouse click on the applet generates a new sequence estimate. The prior estimate is preserved as a black line and the red dots indicate the new sequence of estimates. After 50 sequences, the applet stops and displays the entire set of sequences with no red line. The blue line, always displayed, shows the true value of the probability being estimated. The Reset button clears the graph and starts with a new initial sequence. You may use the selection menu at the bottom right to choose different values for the true probability to be estimated.

More Trials

Mean of Normal Data

In this version of the applet, the mean of continuous variables is estimated. The data are randomly sampled from a Normal distribution with mu = 0 and sigma = 1.