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| == Testing if a correlation is zero == | |
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| Howell DC (2002) details the method to test if a correlation zero using Fisher's transformation. This [attachment:corr.xls spreadsheet] performs this calculation returning a z value. | Howell DC (2002) details the method to test if a correlation zero using Fisher's transformation. This [[attachment:corr.xls|spreadsheet]] performs this calculation returning a z value. |
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| __Reference:__ | A confidence interval for a correlation may be computed using the on-line calculator [[http://faculty.vassar.edu/lowry/rho.html|given here]] and for a matrix of Pearson correlations using the SPSS macro of Weaver and Koopman available from [[https://sites.google.com/a/lakeheadu.ca/bweaver/Home/statistics/spss/my-spss-page/rhoci | from here.]] |
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| Howell DC (2002) Statistical methods for psychology. Fifth Edition. Duxbury press:Pacific Grove, CA. | Reference: Howell DC (2002) Statistical methods for psychology. Fifth Edition. Wadsworth:Pacific Grove, CA. Weaver B and Koopman R (2014) An SPSS Macro to Compute Confidence Intervals for Pearson’s Correlation. To appear in ''The Quantitative Methods for Psychology'' in Spring 2014. |
Testing if a correlation is zero
Howell DC (2002) details the method to test if a correlation zero using Fisher's transformation. This spreadsheet performs this calculation returning a z value.
A confidence interval for a correlation may be computed using the on-line calculator given here and for a matrix of Pearson correlations using the SPSS macro of Weaver and Koopman available from from here.
Reference:
Howell DC (2002) Statistical methods for psychology. Fifth Edition. Wadsworth:Pacific Grove, CA.
Weaver B and Koopman R (2014) An SPSS Macro to Compute Confidence Intervals for Pearson’s Correlation. To appear in The Quantitative Methods for Psychology in Spring 2014.