SCATTER PLOTS

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Sometimes a plot of data values against the order in which they are given is useful. In the case of the potato weights, the potatoes were a random sample so the distribution of points on the plot should appear random.

To create a plot of weight against order, highlight the weight column, click on the chart wizard and choose xy scatter. Step two of the chart wizard is shown on the right.

You should get the following plot:

To try to see if there is any pattern in the order (there isn't), use a different type of subplot format - choose Area in place of xy scatter .

This results in the following graph:

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Basic statistics in Excel   23.2.99   Page: 8 of 25.