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<H3><A NAME="s4">4. Modes</A></H3>

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<H3><A NAME="ss4.1">4.1 Statistical Mode</A>
</H3>

<P>Press F3 to toggle between statistical and trigonometry mode. Alternatively bring up the configuration dialog by pushing the KCALC button or
by pressing F2 to switch into statistics mode.
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<DL>
<DT><B>N</B><DD><P>Recall the number of data items entered
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<DT><B>INV N </B><DD><P>Display the sum of all data items entered
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<DT><B>Mea </B><DD><P>Display the mean of the data items entered
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<DT><B>INV Mea </B><DD><P>Display the sum of the square of all data items entered
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<DT><B>Std </B><DD><P>Display the standard deviation (n)
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<DT><B>INV Std </B><DD><P>Display the population standard deviation  (n-1)
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<DT><B>Med </B><DD><P>Display the median
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<DT><B>Dat </B><DD><P>Enter a data item
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<DT><B>INV Dat </B><DD><P>Clear last data item entered
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<DT><B>Cst </B><DD><P>Clear all data item entered
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</DL>
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<H3><A NAME="ss4.2">4.2 Trigonometric Mode</A>
</H3>

<P>Press F3 to toggle between statistical and trigonometry mode. Alternatively bring up the configuration dialog by pushing the KCALC button or
by pressing F2 to switch into trigonometric mode.
<P>
<DL>
<DT><B>Hyp</B><DD><P>Enter Hyperbolic sub mode. HYP SIN for example is the hyperbolic sine: sinh(x)
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<DT><B>Sin</B><DD><P>Compute the sine.
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<DT><B>INV Sin</B><DD><P>Compute the inverse sine.
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<DT><B>Cos</B><DD><P>Compute the cosine.
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<DT><B>INV Cos</B><DD><P>Compute the inverse cosine.
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<DT><B>Tan</B><DD><P>Compute the tangents.
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<DT><B>INV Tan</B><DD><P>Compute the inverse tangent.
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<DT><B>Log</B><DD><P>Compute the Log base 10
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<DT><B>INV Log</B><DD><P>Compute 10 to the power of x.
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<DT><B>Ln</B><DD><P>Compute the natural logarithm. That is the log with base e.
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<DT><B>INV Ln</B><DD><P>Compute e to the power of x.
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