1.
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2.
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Select Graph > Graph Builder.
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3.
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4.
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Select Statistical > Col Mean.
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5.
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In the formula, click height so that the blue box is around only the variable name.
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Figure 3.22 Select the height Variable
Figure 3.23 Click the Plus Sign
8.
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Click Statistical > Col Std Dev.
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9.
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Click height.
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Figure 3.24 Formula for Upper Bound
12.
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Click OK.
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13.
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14.
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1.
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2.
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3.
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Figure 3.25 Selecting Col Std Dev and Making It Negative
Figure 3.26 Formula for Lower Bound
4.
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Click OK.
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5.
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6.
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1.
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2.
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Figure 3.27 Area Plot
7.
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In the Line options, click the triangle next to Variables. De-select Y upper and Y lower. See Figure 3.28.
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Figure 3.28 Area Plot with Mean Line
8.
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(Optional) Click Done.
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The dark blue line connects the mean heights for each age group. As expected, height tends to increase as age increases. The shaded area shows a range of one standard deviation above and one standard deviation below the mean height at each age group.