In the applet below, you control the mean and SD of size of a population of fish.
[swf src=”http://mathbench.org.au/wp-includes/swf/demoNormDistStageAu.swf” width=”600″ height=”300″]
Use the applet to explore the following questions:
- How does the curve change when you increase the mean, but keep the SD constant?
- How does the curve change when you increase the SD, but keep the mean constant?
- What happens when you DECREASE the SD?
- What does the population look like when the mean and SD are approximately the same?
- What does the population look like when the mean is much larger than the SD?