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>ZTEST</A
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>Name</H2
>ZTEST&nbsp;--&nbsp;</DIV
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>Synopsis</H2
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>ZTEST(ref,x)</PRE
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>Description</H2
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>ZTEST returns the two-tailed probability of a z-test.</P
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>@ref is the data set and @x is the value to be tested.</P
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>If @ref contains less than two data items ZTEST returns #DIV/0! error. This function is Excel compatible. </P
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>Examples</H2
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>Let us assume that the cells A1, A2, ..., A5 contain numbers 11.4, 17.3, 21.3, 25.9, and 40.1.  Then</P
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>ZTEST(A1:A5,20) equals 0.254717826.</P
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>See also</H2
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>        <A
HREF="r7460.html#GNUMERIC-CONFIDENCE"
>CONFIDENCE</A
>
,         <A
HREF="r3570.html#GNUMERIC-NORMDIST"
>NORMDIST</A
>
,         <A
HREF="r8360.html#GNUMERIC-NORMINV"
>NORMINV</A
>
,         <A
HREF="r8002.html#GNUMERIC-NORMSDIST"
>NORMSDIST</A
>
,         <A
HREF="r7584.html#GNUMERIC-NORMSINV"
>NORMSINV</A
>
,         <A
HREF="r7134.html#GNUMERIC-STANDARDIZE"
>STANDARDIZE</A
>
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