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Z.TEST |
  
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Z.TEST |
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This function returns the significance value of a z-test. The z-test generates a standard score for x with respect to the set of data and returns the two-tailed probability for the normal distribution.
Syntax
Z.TEST(array,x,sigma)
Arguments
This function has these arguments:
Argument |
Description |
array |
Array of data to test |
x |
Value at which to test |
sigma |
[Optional] Known standard deviation for the population; if omitted, the calculation uses the sample standard deviation |
Remarks
If sigma is not specified, the calculated standard deviation of the data in array is used.
The equation for calculating the z-test is as follows, where n is the number of data points.
Data Types
Accepts numeric data for all arguments. Returns numeric data.
Examples
Z.TEST(A2:D12,40,0.877)
Z.TEST(R2C1:R12C4,2)
Z.TEST({5,10,15,12,11,8,16,7},10) gives the result 0.355512703503418
Z.TEST({5,10,15,12,11,8,16,7},10,3) gives the result 0.31867594409823696