CK-12 Probability and Statistics - Advanced

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 2. Visualizations of Data


It is important to explain the meaning of the data in the plot for someone who is viewing it without seeing the original
data. For example, you could place the following sentence at the bottom of the chart:


Note: 5 |69 means 56% and 59% are the two values in the 50′s.


If you could rotate this plot on its side, you would see the similarities with the dot plot. The general shape and center
of the plot is easily foundandwe know exactly what each point represents. This plot also shows the slight skewing
to the left that we suspected from the dot plot. Stem plots can be difficult to create depending on the numerical
qualities and the spread of the data. If the data contains more than two digits, you will need to remove some of the

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