ZTEST

Function Type: Compatibility

Description:

Returns the one-tailed probability-value of a z-test. In Excel 2007, this is a Statistical function.

Function Structure:

=ZTEST(array, x, [sigma]).

Argument Breakdown:

array – The array or range of data against which to test x.

x – The value to test.

sigma – The population (known) standard deviation. If omitted, the sample standard deviation is used.

Example:

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