
Statistic Denition
ΣX
2
Sum of the squares of the data values
ẋ Mean
sX Sample standard deviation
σX Population standard deviation
serrX Standard error
ssX Sum of the squared deviations of X
When the data set contains an odd number of values, the median value is not used when calculating Q1 and
Q3. For example, for the data set {3,5,7,8,15,16,17}only the rst three items—3, 5, and 7—are used to
calculate Q1, and only the last three terms—15, 16, and 17—are used to calculate Q3.
Plotting
You can plot the following:
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Histograms
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Box-and-whisker plots (with and without outliers)
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Normal probability plots
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Line plots
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Bar graphs
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Pareto charts
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Control charts
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Dot plots
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Stem and leaf plots
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Pie charts
After you have entered your data and dened your data set, you can plot your data. You can plot up to ve
graphs simultaneously. If you are plotting more than one graph, press and then select Autoscale to
set up the initial window. Then, you can pan and zoom with your ngers to get an optimal view of the graphs.
Plotting statistical data
1. In the Symbolic view, select the data sets you want to plot.
2. From the Plotn menu, select the plot type.
Plotting 237
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