Z.PROBA in other languages:

The English translation translation of the Excel function Z.PROBA is:

Nederlands	English
Z.PROBA	ZTEST

Syntax

ZTEST(array,x,[sigma])

The ZTEST function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):

Array Required. The array or range of data against which to test x.
X Required. The value to test.
Sigma Optional. The population (known) standard deviation. If omitted, the sample standard deviation is used.