Describing the Average and Spread of Data

Section 8.3

Activity Name Activity Description
Boxplot Students view boxplots for either given or user-specified data sets, and can adjust the plot to include outlying data points, and to plot separately by category.
Measures Students use the applet to build a data set and to view relevant statistical measures (mean, median, mode, range, variance and deviation) for the set.
Plop It! Students use a point-and-click interface to build a histogram of number values. The applet calculates and displays updated values for mean, median, and mode as numbers are added to the plot.
Normal Distribution Students adjust the standard deviation of a graphed normal distribution function, and then set parameters for the generation of a histogram based on the given distribution.
Skew Distribution Students adjust the median standard deviation of a graphed normal distribution function to create a skewed distribution, and then set parameters for the generation of a histogram based on the given distribution.