ZTEST

Returns the result of a z-test. Calculates the likelihood that the sample mean is greater than the observed mean.

Syntax

ZTEST(data; μ ;[σ])

data: The array or range containing the data set. Eg., A2:A8

μ: Arithmetic mean of the distribution. Eg., 4

σ: The standard deviation of the distribution. Eg., 1

Examples

Formula	Result
=ZTEST(A2:A8;B2;C2)	0.000000447
=ZTEST(A2:A8;B3;C3)	0.065285009
=ZTEST(A2:A8;B4)	0.000006477

Get a hands-on experience of the function in the embedded range below.

Possible Errors

Errors	Meaning
#N/A!	The function could not find the value it was asked to look for. Commonly occurs in VLOOKUP and similar functions.
#NAME!	The function name is incorrect or invalid. The given defined name (if any) is invalid. There is a typo in the defined name used in the function. Double quotes are missing for text values in the function. Colon missing in a cell range reference.
#VALUE!	The given argument's data type is incorrect or invalid. For example, the function =DATE(A1:A3) will return a #VALUE error when a text value is present in the range.
#REF!	The given cell reference is incorrect or invalid. This error may occur when a cell/range has been deleted, moved, or pasted over.
#N/A!	The given data array is empty.

Similar Functions

TTEST

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