TI-Nspire For Dummies, 2nd Edition
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On the TI-Nspire, you can plot a value on a histogram that displays as a vertical line perpendicular to the horizontal axis at a point equal to the specified value. In the third screen, press [MENU]→Analyze→Plot Value. At the prompt, type mean(correct) and press [ENTER]. (See the third screen.)

You can plot a single number or an expression that equals a number. Statistical values such as mean or standard deviation are good choices for Plot Value.

The Plot Value feature is also available with dot plots and box plots.

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To remove a plotted value, move the cursor over the vertical line and press [CTRL][MENU]→Remove Plotted Value. To hide a normal curve, press [MENU]→Analyze→Hide Normal PDF.

Try hovering on the normal curve, right-clicking ([CTRL][MENU]), and choosing Shade Under Function. Shade a region under the curve by clicking the lower and upper bounds of the interval to display the corresponding probability associated with this interval.

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Jeff McCalla teaches Algebra 2 and Pre-Calculus at St. Mary's Episcopal School in Memphis. He is a T3 instructor for Texas Instruments and co- founder of the TI-Nspire SuperUser group. Steve Ouellette wrote the first edition of TI-Nspire For Dummies as well as CliffsNotes® Guide to TI-Nspire.

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