Normal Distribution Applet

① This applet demonstrates the normal distribution through an interactive visualization, including the probability density curve, histogram, and key statistical measures such as mean and standard deviation. ② Core mathematical concepts include normal distribution, mean, standard deviation, probability density function, cumulative probability via integration, histogram, and statistical characteristics like mode and median. ③ Construction uses GeoGebra commands: Histogram to create data bins, Integral to compute area under the curve for probabilities, Mean and SD for statistical parameters; numerous objects (A1 to A40) store data points, statistics, and graphical elements, with sliders or inputs for real-time parameter adjustment. ④ Suitable for high school and university courses in statistics and probability, as a teaching tool or for self-study to explore how changing parameters affects the distribution shape.