FISHER(x)
- is the number.
is the number.Description
- This function gives the value of Fisher transformation at x.
- Fisher transformation is used to test the hypothesis of two correlations.
- It is mainly associated with the Pearson product-moment correlation coefficient for bivariate normal observations.
- In FISHER(X), x is the number which ranges between -1 to +1.
- The transformaton is defined by : z=1/2 ln(1+x/1-x)= arctanh(x), where "ln" is the natural logarithm function and "arctanh" is the inverse hyperbolic function.
- This function will give the result as error when:
- x is nonnumeric
- x<=-1 or x>=1 .
Examples
- FISHER(0.5642)=0.6389731838284958
- FISHER(0)=0
- FISHER(-0.3278)=-0.3403614004970268
- FISHER(1)=Infinity
- FISHER(-1)=Infinity
See Also