Sketch a Cumulative Frequency Curve

Instructions

1. Select the pen tool from the tool bar and draw a cumulative frequency curve on the top axes free-hand, thus replacing the existing one (Note: The curve needs to start and finish in the same place as the existing one) The bar-chart and histogram will be automatically updated to be equivalent to the curve. 2. Adjust the slider to select the number of groups for your histogram.

Key Questioning

How could you draw a distribution with positive/negative skew? How could you draw a distribution with large/small inter-quartile range? How could you draw a bi-modal distribution?