Manuals/calci/FISHER

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FISHER(x)


  • 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:
  1. x is nonnumeric
  2. x<=-1 or x>=1 .

Examples

  1. FISHER(0.5642)=0.6389731838284958
  2. FISHER(0)=0
  3. FISHER(-0.3278)=-0.3403614004970268
  4. FISHER(1)=Infinity
  5. FISHER(-1)=Infinity

See Also


References

Bessel Function